Public Member Functions | Private Types | Private Member Functions | Private Attributes | List of all members
TwoLayerInterfaceProblem< ELEMENT > Class Template Reference

Problem class to simulate viscous drop propagating along 2D channel. More...

+ Inheritance diagram for TwoLayerInterfaceProblem< ELEMENT >:

Public Member Functions

 TwoLayerInterfaceProblem ()
 Constructor. More...
 
 ~TwoLayerInterfaceProblem ()
 Destructor. More...
 
void actions_before_adapt ()
 Actions before adapt: Wipe the mesh of free surface elements. More...
 
void actions_after_adapt ()
 Actions after adapt: Rebuild the mesh of free surface elements. More...
 
void actions_after_newton_solve ()
 Update the after solve (empty) More...
 
void actions_before_newton_solve ()
 Update the problem specs before solve. More...
 
void complete_problem_setup ()
 Set boundary conditions and complete the build of all elements. More...
 
void doc_solution (const std::string &comment="")
 Doc the solution. More...
 
void compute_error_estimate (double &max_err, double &min_err)
 Compute the error estimates and assign to elements for plotting. More...
 
void set_initial_condition ()
 Set the initial conditions. More...
 
void deform_interface (const double &epsilon, const unsigned &n_periods)
 Function to deform the interface. More...
 
void fix_pressure (const unsigned &e, const unsigned &pdof, const double &pvalue)
 Fix pressure in element e at pressure dof pdof and set to pvalue. More...
 
- Public Member Functions inherited from oomph::Problem
virtual void debug_hook_fct (const unsigned &i)
 
void set_analytic_dparameter (double *const &parameter_pt)
 
void unset_analytic_dparameter (double *const &parameter_pt)
 
bool is_dparameter_calculated_analytically (double *const &parameter_pt)
 
void set_analytic_hessian_products ()
 
void unset_analytic_hessian_products ()
 
bool are_hessian_products_calculated_analytically ()
 
void set_pinned_values_to_zero ()
 
bool distributed () const
 
OomphCommunicator * communicator_pt ()
 access function to the oomph-lib communicator More...
 
const OomphCommunicator * communicator_pt () const
 access function to the oomph-lib communicator, const version More...
 
 Problem ()
 
 Problem (const Problem &dummy)=delete
 Broken copy constructor. More...
 
void operator= (const Problem &)=delete
 Broken assignment operator. More...
 
virtual ~Problem ()
 Virtual destructor to clean up memory. More...
 
Mesh *& mesh_pt ()
 Return a pointer to the global mesh. More...
 
Mesh *const & mesh_pt () const
 Return a pointer to the global mesh (const version) More...
 
Mesh *& mesh_pt (const unsigned &imesh)
 
Mesh *const & mesh_pt (const unsigned &imesh) const
 Return a pointer to the i-th submesh (const version) More...
 
unsigned nsub_mesh () const
 Return number of submeshes. More...
 
unsigned add_sub_mesh (Mesh *const &mesh_pt)
 
void flush_sub_meshes ()
 
void build_global_mesh ()
 
void rebuild_global_mesh ()
 
LinearSolver *& linear_solver_pt ()
 Return a pointer to the linear solver object. More...
 
LinearSolver *const & linear_solver_pt () const
 Return a pointer to the linear solver object (const version) More...
 
LinearSolver *& mass_matrix_solver_for_explicit_timestepper_pt ()
 
LinearSolver * mass_matrix_solver_for_explicit_timestepper_pt () const
 
EigenSolver *& eigen_solver_pt ()
 Return a pointer to the eigen solver object. More...
 
EigenSolver *const & eigen_solver_pt () const
 Return a pointer to the eigen solver object (const version) More...
 
Time *& time_pt ()
 Return a pointer to the global time object. More...
 
Time * time_pt () const
 Return a pointer to the global time object (const version). More...
 
double & time ()
 Return the current value of continuous time. More...
 
double time () const
 Return the current value of continuous time (const version) More...
 
TimeStepper *& time_stepper_pt ()
 
const TimeStepper * time_stepper_pt () const
 
TimeStepper *& time_stepper_pt (const unsigned &i)
 Return a pointer to the i-th timestepper. More...
 
ExplicitTimeStepper *& explicit_time_stepper_pt ()
 Return a pointer to the explicit timestepper. More...
 
unsigned long set_timestepper_for_all_data (TimeStepper *const &time_stepper_pt, const bool &preserve_existing_data=false)
 
virtual void shift_time_values ()
 Shift all values along to prepare for next timestep. More...
 
AssemblyHandler *& assembly_handler_pt ()
 Return a pointer to the assembly handler object. More...
 
AssemblyHandler *const & assembly_handler_pt () const
 Return a pointer to the assembly handler object (const version) More...
 
double & minimum_dt ()
 Access function to min timestep in adaptive timestepping. More...
 
double & maximum_dt ()
 Access function to max timestep in adaptive timestepping. More...
 
unsigned & max_newton_iterations ()
 Access function to max Newton iterations before giving up. More...
 
void problem_is_nonlinear (const bool &prob_lin)
 Access function to Problem_is_nonlinear. More...
 
double & max_residuals ()
 
bool & time_adaptive_newton_crash_on_solve_fail ()
 Access function for Time_adaptive_newton_crash_on_solve_fail. More...
 
double & newton_solver_tolerance ()
 
void add_time_stepper_pt (TimeStepper *const &time_stepper_pt)
 
void set_explicit_time_stepper_pt (ExplicitTimeStepper *const &explicit_time_stepper_pt)
 
void initialise_dt (const double &dt)
 
void initialise_dt (const Vector< double > &dt)
 
Data *& global_data_pt (const unsigned &i)
 Return a pointer to the the i-th global data object. More...
 
void add_global_data (Data *const &global_data_pt)
 
void flush_global_data ()
 
LinearAlgebraDistribution *const & dof_distribution_pt () const
 Return the pointer to the dof distribution (read-only) More...
 
unsigned long ndof () const
 Return the number of dofs. More...
 
unsigned ntime_stepper () const
 Return the number of time steppers. More...
 
unsigned nglobal_data () const
 Return the number of global data values. More...
 
unsigned self_test ()
 Self-test: Check meshes and global data. Return 0 for OK. More...
 
void enable_store_local_dof_pt_in_elements ()
 
void disable_store_local_dof_pt_in_elements ()
 
unsigned long assign_eqn_numbers (const bool &assign_local_eqn_numbers=true)
 
void describe_dofs (std::ostream &out= *(oomph_info.stream_pt())) const
 
void enable_discontinuous_formulation ()
 
void disable_discontinuous_formulation ()
 
void get_dofs (DoubleVector &dofs) const
 
void get_dofs (const unsigned &t, DoubleVector &dofs) const
 Return vector of the t'th history value of all dofs. More...
 
void set_dofs (const DoubleVector &dofs)
 Set the values of the dofs. More...
 
void set_dofs (const unsigned &t, DoubleVector &dofs)
 Set the history values of the dofs. More...
 
void set_dofs (const unsigned &t, Vector< double * > &dof_pt)
 
void add_to_dofs (const double &lambda, const DoubleVector &increment_dofs)
 Add lambda x incremenet_dofs[l] to the l-th dof. More...
 
double * global_dof_pt (const unsigned &i)
 
double & dof (const unsigned &i)
 i-th dof in the problem More...
 
double dof (const unsigned &i) const
 i-th dof in the problem (const version) More...
 
double *& dof_pt (const unsigned &i)
 Pointer to i-th dof in the problem. More...
 
double * dof_pt (const unsigned &i) const
 Pointer to i-th dof in the problem (const version) More...
 
virtual void get_inverse_mass_matrix_times_residuals (DoubleVector &Mres)
 
virtual void get_dvaluesdt (DoubleVector &f)
 
virtual void get_residuals (DoubleVector &residuals)
 Get the total residuals Vector for the problem. More...
 
virtual void get_jacobian (DoubleVector &residuals, DenseDoubleMatrix &jacobian)
 
virtual void get_jacobian (DoubleVector &residuals, CRDoubleMatrix &jacobian)
 
virtual void get_jacobian (DoubleVector &residuals, CCDoubleMatrix &jacobian)
 
virtual void get_jacobian (DoubleVector &residuals, SumOfMatrices &jacobian)
 
void get_fd_jacobian (DoubleVector &residuals, DenseMatrix< double > &jacobian)
 Get the full Jacobian by finite differencing. More...
 
void get_derivative_wrt_global_parameter (double *const &parameter_pt, DoubleVector &result)
 
void get_hessian_vector_products (DoubleVectorWithHaloEntries const &Y, Vector< DoubleVectorWithHaloEntries > const &C, Vector< DoubleVectorWithHaloEntries > &product)
 
void solve_eigenproblem (const unsigned &n_eval, Vector< std::complex< double >> &eigenvalue, Vector< DoubleVector > &eigenvector, const bool &steady=true)
 Solve the eigenproblem. More...
 
void solve_eigenproblem (const unsigned &n_eval, Vector< std::complex< double >> &eigenvalue, const bool &steady=true)
 
virtual void get_eigenproblem_matrices (CRDoubleMatrix &mass_matrix, CRDoubleMatrix &main_matrix, const double &shift=0.0)
 
void assign_eigenvector_to_dofs (DoubleVector &eigenvector)
 Assign the eigenvector passed to the function to the dofs. More...
 
void add_eigenvector_to_dofs (const double &epsilon, const DoubleVector &eigenvector)
 
void store_current_dof_values ()
 Store the current values of the degrees of freedom. More...
 
void restore_dof_values ()
 Restore the stored values of the degrees of freedom. More...
 
void enable_jacobian_reuse ()
 
void disable_jacobian_reuse ()
 Disable recycling of Jacobian in Newton iteration. More...
 
bool jacobian_reuse_is_enabled ()
 Is recycling of Jacobian in Newton iteration enabled? More...
 
bool & use_predictor_values_as_initial_guess ()
 
void newton_solve ()
 Use Newton method to solve the problem. More...
 
void enable_globally_convergent_newton_method ()
 enable globally convergent Newton method More...
 
void disable_globally_convergent_newton_method ()
 disable globally convergent Newton method More...
 
void newton_solve (unsigned const &max_adapt)
 
void steady_newton_solve (unsigned const &max_adapt=0)
 
void copy (Problem *orig_problem_pt)
 
virtual Problem * make_copy ()
 
virtual void read (std::ifstream &restart_file, bool &unsteady_restart)
 
virtual void read (std::ifstream &restart_file)
 
virtual void dump (std::ofstream &dump_file) const
 
void dump (const std::string &dump_file_name) const
 
void delete_all_external_storage ()
 
virtual void symmetrise_eigenfunction_for_adaptive_pitchfork_tracking ()
 
double * bifurcation_parameter_pt () const
 
void get_bifurcation_eigenfunction (Vector< DoubleVector > &eigenfunction)
 
void activate_fold_tracking (double *const &parameter_pt, const bool &block_solve=true)
 
void activate_bifurcation_tracking (double *const &parameter_pt, const DoubleVector &eigenvector, const bool &block_solve=true)
 
void activate_bifurcation_tracking (double *const &parameter_pt, const DoubleVector &eigenvector, const DoubleVector &normalisation, const bool &block_solve=true)
 
void activate_pitchfork_tracking (double *const &parameter_pt, const DoubleVector &symmetry_vector, const bool &block_solve=true)
 
void activate_hopf_tracking (double *const &parameter_pt, const bool &block_solve=true)
 
void activate_hopf_tracking (double *const &parameter_pt, const double &omega, const DoubleVector &null_real, const DoubleVector &null_imag, const bool &block_solve=true)
 
void deactivate_bifurcation_tracking ()
 
void reset_assembly_handler_to_default ()
 Reset the system to the standard non-augemented state. More...
 
double arc_length_step_solve (double *const &parameter_pt, const double &ds, const unsigned &max_adapt=0)
 
double arc_length_step_solve (Data *const &data_pt, const unsigned &data_index, const double &ds, const unsigned &max_adapt=0)
 
void reset_arc_length_parameters ()
 
int & sign_of_jacobian ()
 
void explicit_timestep (const double &dt, const bool &shift_values=true)
 Take an explicit timestep of size dt. More...
 
void unsteady_newton_solve (const double &dt)
 
void unsteady_newton_solve (const double &dt, const bool &shift_values)
 
void unsteady_newton_solve (const double &dt, const unsigned &max_adapt, const bool &first, const bool &shift=true)
 
double doubly_adaptive_unsteady_newton_solve (const double &dt, const double &epsilon, const unsigned &max_adapt, const bool &first, const bool &shift=true)
 
double doubly_adaptive_unsteady_newton_solve (const double &dt, const double &epsilon, const unsigned &max_adapt, const unsigned &suppress_resolve_after_spatial_adapt_flag, const bool &first, const bool &shift=true)
 
double adaptive_unsteady_newton_solve (const double &dt_desired, const double &epsilon)
 
double adaptive_unsteady_newton_solve (const double &dt_desired, const double &epsilon, const bool &shift_values)
 
void assign_initial_values_impulsive ()
 
void assign_initial_values_impulsive (const double &dt)
 
void calculate_predictions ()
 Calculate predictions. More...
 
void enable_mass_matrix_reuse ()
 
void disable_mass_matrix_reuse ()
 
bool mass_matrix_reuse_is_enabled ()
 Return whether the mass matrix is being reused. More...
 
void refine_uniformly (const Vector< unsigned > &nrefine_for_mesh)
 
void refine_uniformly (const Vector< unsigned > &nrefine_for_mesh, DocInfo &doc_info)
 
void refine_uniformly_and_prune (const Vector< unsigned > &nrefine_for_mesh)
 
void refine_uniformly_and_prune (const Vector< unsigned > &nrefine_for_mesh, DocInfo &doc_info)
 
void refine_uniformly (DocInfo &doc_info)
 
void refine_uniformly_and_prune (DocInfo &doc_info)
 
void refine_uniformly ()
 
void refine_uniformly (const unsigned &i_mesh, DocInfo &doc_info)
 Do uniform refinement for submesh i_mesh with documentation. More...
 
void refine_uniformly (const unsigned &i_mesh)
 Do uniform refinement for submesh i_mesh without documentation. More...
 
void p_refine_uniformly (const Vector< unsigned > &nrefine_for_mesh)
 
void p_refine_uniformly (const Vector< unsigned > &nrefine_for_mesh, DocInfo &doc_info)
 
void p_refine_uniformly_and_prune (const Vector< unsigned > &nrefine_for_mesh)
 
void p_refine_uniformly_and_prune (const Vector< unsigned > &nrefine_for_mesh, DocInfo &doc_info)
 
void p_refine_uniformly (DocInfo &doc_info)
 
void p_refine_uniformly_and_prune (DocInfo &doc_info)
 
void p_refine_uniformly ()
 
void p_refine_uniformly (const unsigned &i_mesh, DocInfo &doc_info)
 Do uniform p-refinement for submesh i_mesh with documentation. More...
 
void p_refine_uniformly (const unsigned &i_mesh)
 Do uniform p-refinement for submesh i_mesh without documentation. More...
 
void refine_selected_elements (const Vector< unsigned > &elements_to_be_refined)
 
void refine_selected_elements (const Vector< RefineableElement * > &elements_to_be_refined_pt)
 
void refine_selected_elements (const unsigned &i_mesh, const Vector< unsigned > &elements_to_be_refined)
 
void refine_selected_elements (const unsigned &i_mesh, const Vector< RefineableElement * > &elements_to_be_refined_pt)
 
void refine_selected_elements (const Vector< Vector< unsigned >> &elements_to_be_refined)
 
void refine_selected_elements (const Vector< Vector< RefineableElement * >> &elements_to_be_refined_pt)
 
void p_refine_selected_elements (const Vector< unsigned > &elements_to_be_refined)
 
void p_refine_selected_elements (const Vector< PRefineableElement * > &elements_to_be_refined_pt)
 
void p_refine_selected_elements (const unsigned &i_mesh, const Vector< unsigned > &elements_to_be_refined)
 
void p_refine_selected_elements (const unsigned &i_mesh, const Vector< PRefineableElement * > &elements_to_be_refined_pt)
 
void p_refine_selected_elements (const Vector< Vector< unsigned >> &elements_to_be_refined)
 
void p_refine_selected_elements (const Vector< Vector< PRefineableElement * >> &elements_to_be_refined_pt)
 
unsigned unrefine_uniformly ()
 
unsigned unrefine_uniformly (const unsigned &i_mesh)
 
void p_unrefine_uniformly (DocInfo &doc_info)
 
void p_unrefine_uniformly (const unsigned &i_mesh, DocInfo &doc_info)
 Do uniform p-unrefinement for submesh i_mesh without documentation. More...
 
void adapt (unsigned &n_refined, unsigned &n_unrefined)
 
void adapt ()
 
void p_adapt (unsigned &n_refined, unsigned &n_unrefined)
 
void p_adapt ()
 
void adapt_based_on_error_estimates (unsigned &n_refined, unsigned &n_unrefined, Vector< Vector< double >> &elemental_error)
 
void adapt_based_on_error_estimates (Vector< Vector< double >> &elemental_error)
 
void get_all_error_estimates (Vector< Vector< double >> &elemental_error)
 
void doc_errors (DocInfo &doc_info)
 Get max and min error for all elements in submeshes. More...
 
void doc_errors ()
 Get max and min error for all elements in submeshes. More...
 
void enable_info_in_newton_solve ()
 
void disable_info_in_newton_solve ()
 Disable the output of information when in the newton solver. More...
 
- Public Member Functions inherited from oomph::ExplicitTimeSteppableObject
 ExplicitTimeSteppableObject ()
 Empty constructor. More...
 
 ExplicitTimeSteppableObject (const ExplicitTimeSteppableObject &)=delete
 Broken copy constructor. More...
 
void operator= (const ExplicitTimeSteppableObject &)=delete
 Broken assignment operator. More...
 
virtual ~ExplicitTimeSteppableObject ()
 Empty destructor. More...
 
virtual void actions_before_explicit_stage ()
 
virtual void actions_after_explicit_stage ()
 

Private Types

enum  {
  Inflow_boundary_id =0 , Upper_wall_boundary_id =1 , Outflow_boundary_id =2 , Bottom_wall_boundary_id =3 ,
  Interface_boundary_id =4
}
 Enumeration of channel boundaries. More...
 

Private Member Functions

void create_free_surface_elements ()
 Create free surface elements. More...
 
void delete_free_surface_elements ()
 Delete free surface elements. More...
 

Private Attributes

Mesh * Free_surface_mesh_pt
 Pointers to mesh of free surface elements. More...
 
RefineableSolidTriangleMesh< ELEMENT > * Fluid_mesh_pt
 Pointer to Fluid_mesh. More...
 
Vector< TriangleMeshPolygon * > Drop_polygon_pt
 Vector storing pointer to the drop polygons. More...
 
TriangleMeshPolygon * Outer_boundary_polyline_pt
 Triangle mesh polygon for outer boundary. More...
 
Data * Drop_pressure_data_pt
 Pointer to a global drop pressure datum. More...
 
double Initial_value_for_drop_pressure
 Backed up drop pressure between adaptations. More...
 
ELEMENT * Hijacked_element_pt
 Pointer to hijacked element. More...
 
bool Use_volume_constraint
 Bool to indicate if volume constraint is applied (only for steady run) More...
 

Additional Inherited Members

- Public Types inherited from oomph::Problem
typedef void(* SpatialErrorEstimatorFctPt) (Mesh *&mesh_pt, Vector< double > &elemental_error)
 Function pointer for spatial error estimator. More...
 
typedef void(* SpatialErrorEstimatorWithDocFctPt) (Mesh *&mesh_pt, Vector< double > &elemental_error, DocInfo &doc_info)
 Function pointer for spatial error estimator with doc. More...
 
- Public Attributes inherited from oomph::Problem
bool Shut_up_in_newton_solve
 
- Static Public Attributes inherited from oomph::Problem
static bool Suppress_warning_about_actions_before_read_unstructured_meshes
 
- Protected Types inherited from oomph::Problem
enum  Assembly_method {
  Perform_assembly_using_vectors_of_pairs , Perform_assembly_using_two_vectors , Perform_assembly_using_maps , Perform_assembly_using_lists ,
  Perform_assembly_using_two_arrays
}
 Enumerated flags to determine which sparse assembly method is used. More...
 
- Protected Member Functions inherited from oomph::Problem
unsigned setup_element_count_per_dof ()
 
virtual void sparse_assemble_row_or_column_compressed (Vector< int * > &column_or_row_index, Vector< int * > &row_or_column_start, Vector< double * > &value, Vector< unsigned > &nnz, Vector< double * > &residual, bool compressed_row_flag)
 
virtual void actions_before_newton_convergence_check ()
 
virtual void actions_before_newton_step ()
 
virtual void actions_after_newton_step ()
 
virtual void actions_before_implicit_timestep ()
 
virtual void actions_after_implicit_timestep ()
 
virtual void actions_after_implicit_timestep_and_error_estimation ()
 
virtual void actions_before_explicit_timestep ()
 Actions that should be performed before each explicit time step. More...
 
virtual void actions_after_explicit_timestep ()
 Actions that should be performed after each explicit time step. More...
 
virtual void actions_before_read_unstructured_meshes ()
 
virtual void actions_after_read_unstructured_meshes ()
 
virtual void actions_after_change_in_global_parameter (double *const &parameter_pt)
 
virtual void actions_after_change_in_bifurcation_parameter ()
 
virtual void actions_after_parameter_increase (double *const &parameter_pt)
 
double & dof_derivative (const unsigned &i)
 
double & dof_current (const unsigned &i)
 
virtual double global_temporal_error_norm ()
 
unsigned newton_solve_continuation (double *const &parameter_pt)
 
unsigned newton_solve_continuation (double *const &parameter_pt, DoubleVector &z)
 
void calculate_continuation_derivatives (double *const &parameter_pt)
 
void calculate_continuation_derivatives (const DoubleVector &z)
 
void calculate_continuation_derivatives_fd (double *const &parameter_pt)
 
bool does_pointer_correspond_to_problem_data (double *const &parameter_pt)
 
void set_consistent_pinned_values_for_continuation ()
 
- Protected Attributes inherited from oomph::Problem
Vector< Problem * > Copy_of_problem_pt
 
std::map< double *, bool > Calculate_dparameter_analytic
 
bool Calculate_hessian_products_analytic
 
LinearAlgebraDistribution * Dof_distribution_pt
 
Vector< double * > Dof_pt
 Vector of pointers to dofs. More...
 
DoubleVectorWithHaloEntries Element_count_per_dof
 
double Relaxation_factor
 
double Newton_solver_tolerance
 
unsigned Max_newton_iterations
 Maximum number of Newton iterations. More...
 
unsigned Nnewton_iter_taken
 
Vector< double > Max_res
 Maximum residuals at start and after each newton iteration. More...
 
double Max_residuals
 
bool Time_adaptive_newton_crash_on_solve_fail
 
bool Jacobian_reuse_is_enabled
 Is re-use of Jacobian in Newton iteration enabled? Default: false. More...
 
bool Jacobian_has_been_computed
 
bool Problem_is_nonlinear
 
bool Pause_at_end_of_sparse_assembly
 
bool Doc_time_in_distribute
 
unsigned Sparse_assembly_method
 
unsigned Sparse_assemble_with_arrays_initial_allocation
 
unsigned Sparse_assemble_with_arrays_allocation_increment
 
Vector< Vector< unsigned > > Sparse_assemble_with_arrays_previous_allocation
 
double Numerical_zero_for_sparse_assembly
 
double FD_step_used_in_get_hessian_vector_products
 
bool Mass_matrix_reuse_is_enabled
 
bool Mass_matrix_has_been_computed
 
bool Discontinuous_element_formulation
 
double Minimum_dt
 Minimum desired dt: if dt falls below this value, exit. More...
 
double Maximum_dt
 Maximum desired dt. More...
 
double DTSF_max_increase
 
double DTSF_min_decrease
 
double Minimum_dt_but_still_proceed
 
bool Scale_arc_length
 Boolean to control whether arc-length should be scaled. More...
 
double Desired_proportion_of_arc_length
 Proportion of the arc-length to taken by the parameter. More...
 
double Theta_squared
 
int Sign_of_jacobian
 Storage for the sign of the global Jacobian. More...
 
double Continuation_direction
 
double Parameter_derivative
 Storage for the derivative of the global parameter wrt arc-length. More...
 
double Parameter_current
 Storage for the present value of the global parameter. More...
 
bool Use_continuation_timestepper
 Boolean to control original or new storage of dof stuff. More...
 
unsigned Dof_derivative_offset
 
unsigned Dof_current_offset
 
Vector< double > Dof_derivative
 Storage for the derivative of the problem variables wrt arc-length. More...
 
Vector< double > Dof_current
 Storage for the present values of the variables. More...
 
double Ds_current
 Storage for the current step value. More...
 
unsigned Desired_newton_iterations_ds
 
double Minimum_ds
 Minimum desired value of arc-length. More...
 
bool Bifurcation_detection
 Boolean to control bifurcation detection via determinant of Jacobian. More...
 
bool Bisect_to_find_bifurcation
 Boolean to control wheter bisection is used to located bifurcation. More...
 
bool First_jacobian_sign_change
 Boolean to indicate whether a sign change has occured in the Jacobian. More...
 
bool Arc_length_step_taken
 Boolean to indicate whether an arc-length step has been taken. More...
 
bool Use_finite_differences_for_continuation_derivatives
 
OomphCommunicator * Communicator_pt
 The communicator for this problem. More...
 
bool Always_take_one_newton_step
 
double Timestep_reduction_factor_after_nonconvergence
 
bool Keep_temporal_error_below_tolerance
 
- Static Protected Attributes inherited from oomph::Problem
static ContinuationStorageScheme Continuation_time_stepper
 Storage for the single static continuation timestorage object. More...
 

Detailed Description

template<class ELEMENT>
class TwoLayerInterfaceProblem< ELEMENT >

Problem class to simulate viscous drop propagating along 2D channel.

Member Enumeration Documentation

◆ anonymous enum

template<class ELEMENT >
anonymous enum
private

Enumeration of channel boundaries.

Enumerator
Inflow_boundary_id 
Upper_wall_boundary_id 
Outflow_boundary_id 
Bottom_wall_boundary_id 
Interface_boundary_id 
559  {
560  Inflow_boundary_id=0,
561  Upper_wall_boundary_id=1,
562  Outflow_boundary_id=2,
563  Bottom_wall_boundary_id=3,
564  Interface_boundary_id=4,
565  };
TwoLayerInterfaceProblem::Interface_boundary_id
@ Interface_boundary_id
Definition: refineable_two_layer_interface.cc:564
TwoLayerInterfaceProblem::Outflow_boundary_id
@ Outflow_boundary_id
Definition: refineable_two_layer_interface.cc:562
TwoLayerInterfaceProblem::Inflow_boundary_id
@ Inflow_boundary_id
Definition: refineable_two_layer_interface.cc:560
TwoLayerInterfaceProblem::Bottom_wall_boundary_id
@ Bottom_wall_boundary_id
Definition: refineable_two_layer_interface.cc:563
TwoLayerInterfaceProblem::Upper_wall_boundary_id
@ Upper_wall_boundary_id
Definition: refineable_two_layer_interface.cc:561

Constructor & Destructor Documentation

◆ TwoLayerInterfaceProblem()

template<class ELEMENT >
TwoLayerInterfaceProblem< ELEMENT >::TwoLayerInterfaceProblem

Constructor.

576 {
577  // Output directory
578  Problem_Parameter::Doc_info.set_directory("RESLT");
579 
580  // Allocate the timestepper -- this constructs the Problem's
581  // time object with a sufficient amount of storage to store the
582  // previous timsteps.
583  this->add_time_stepper_pt(new BDF<2>);
584 
585  // Build the boundary segments for outer boundary, consisting of
586  //--------------------------------------------------------------
587  // four separate polylines
588  //------------------------
589  Vector<TriangleMeshCurveSection*> boundary_polyline_pt(4);
590 
591  // Each polyline only has three vertices -- provide storage for their
592  // coordinates
593  Vector<Vector<double> > vertex_coord(3);
594  for(unsigned i=0;i<3;i++)
595  {
596  vertex_coord[i].resize(2);
597  }
598 
599  const double H = Problem_Parameter::Height;
600  const double h = Problem_Parameter::Interface_Height*H;
601 
602  // First polyline: Inflow
603  vertex_coord[0][0]=0.0;
604  vertex_coord[0][1]=0.0;
605  vertex_coord[1][0]=0.0;
606  vertex_coord[1][1]= h;
607  vertex_coord[2][0]=0.0;
608  vertex_coord[2][1]= H;
609 
610  // Build the 1st boundary polyline
611  boundary_polyline_pt[0] = new TriangleMeshPolyLine(vertex_coord,
612  Inflow_boundary_id);
613 
614  // Second boundary polyline: Upper wall
615  vertex_coord[0][0]=0.0;
616  vertex_coord[0][1]=H;
617  vertex_coord[1][0]=0.5*Problem_Parameter::Length;
618  vertex_coord[1][1]=H;
619  vertex_coord[2][0]=Problem_Parameter::Length;
620  vertex_coord[2][1]=H;
621 
622  // Build the 2nd boundary polyline
623  boundary_polyline_pt[1] = new TriangleMeshPolyLine(vertex_coord,
624  Upper_wall_boundary_id);
625 
626  // Third boundary polyline: Outflow
627  vertex_coord[0][0]=Problem_Parameter::Length;
628  vertex_coord[0][1]=H;
629  vertex_coord[1][0]=Problem_Parameter::Length;
630  vertex_coord[1][1]=h;
631  vertex_coord[2][0]=Problem_Parameter::Length;
632  vertex_coord[2][1]=0.0;
633 
634  // Build the 3rd boundary polyline
635  boundary_polyline_pt[2] = new TriangleMeshPolyLine(vertex_coord,
636  Outflow_boundary_id);
637 
638  // Fourth boundary polyline: Bottom wall
639  vertex_coord[0][0]=Problem_Parameter::Length;
640  vertex_coord[0][1]=0.0;
641  vertex_coord[1][0]=0.5*Problem_Parameter::Length;
642  vertex_coord[1][1]=0.0;
643  vertex_coord[2][0]=0.0;
644  vertex_coord[2][1]=0.0;
645 
646  // Build the 4th boundary polyline
647  boundary_polyline_pt[3] = new TriangleMeshPolyLine(vertex_coord,
648  Bottom_wall_boundary_id);
649 
650  // Create the triangle mesh polygon for outer boundary
651  Outer_boundary_polyline_pt = new TriangleMeshPolygon(boundary_polyline_pt);
652 
653  //Here we need to put the dividing internal line in
654  Vector<TriangleMeshOpenCurve *> interface_pt(1);
655  //Set the vertex coordinates
656  vertex_coord[0][0]=0.0;
657  vertex_coord[0][1]=h;
658  vertex_coord[1][0]=0.5*Problem_Parameter::Length;
659  vertex_coord[1][1]=h;
660  vertex_coord[2][0]=Problem_Parameter::Length;
661  vertex_coord[2][1]=h;
662 
663 //Create the internal line
664  TriangleMeshPolyLine* interface_polyline_pt =
665  new TriangleMeshPolyLine(vertex_coord,
666  Interface_boundary_id);
667 
668  // Do the connection with the destination boundary, in this case
669  // the connection is done with the inflow boundary
670  interface_polyline_pt->connect_initial_vertex_to_polyline(
671  dynamic_cast<TriangleMeshPolyLine*>(boundary_polyline_pt[0]),1);
672 
673  // Do the connection with the destination boundary, in this case
674  // the connection is done with the outflow boundary
675  interface_polyline_pt->connect_final_vertex_to_polyline(
676  dynamic_cast<TriangleMeshPolyLine*>(boundary_polyline_pt[2]),1);
677 
678  Vector<TriangleMeshCurveSection*> interface_curve_pt(1);
679  interface_curve_pt[0] = interface_polyline_pt;
680 
681  interface_pt[0] = new TriangleMeshOpenCurve(interface_curve_pt);
682 
683  // Now build the mesh, based on the boundaries specified by
684  //---------------------------------------------------------
685  // polygons just created
686  //----------------------
687 
688  // Convert to "closed curve" objects
689  TriangleMeshClosedCurve* outer_closed_curve_pt=Outer_boundary_polyline_pt;
690 
691  unsigned n_internal_closed_boundaries = 0;
692  Vector<TriangleMeshClosedCurve *>
693  inner_boundaries_pt(n_internal_closed_boundaries);
694 
695  // Target area for initial mesh
696  double uniform_element_area=0.01;
697 
698  // Use the TriangleMeshParameter object for gathering all
699  // the necessary arguments for the TriangleMesh object
700  TriangleMeshParameters triangle_mesh_parameters(
701  outer_closed_curve_pt);
702 
703  //Define the inner boundaries
704  triangle_mesh_parameters.internal_closed_curve_pt() = inner_boundaries_pt;
705 
706  // Define the holes on the boundary
707  triangle_mesh_parameters.internal_open_curves_pt() = interface_pt;
708 
709  // Define the maximum element area
710  triangle_mesh_parameters.element_area() =
711  uniform_element_area;
712 
713  Vector<double> lower_region(2);
714  lower_region[0] = 0.5*Problem_Parameter::Length;
715  lower_region[1] = 0.5*Problem_Parameter::Interface_Height;
716 
717  // Define the region
718  triangle_mesh_parameters.add_region_coordinates(1, lower_region);
719 
720  // Create the mesh
721  Fluid_mesh_pt =
722  new RefineableSolidTriangleMesh<ELEMENT>(
723  triangle_mesh_parameters, this->time_stepper_pt());
724 
725  // Set error estimator for bulk mesh
726  Z2ErrorEstimator* error_estimator_pt=new Z2ErrorEstimator;
727  Fluid_mesh_pt->spatial_error_estimator_pt()=error_estimator_pt;
728 
729  // Set targets for spatial adaptivity
730  Fluid_mesh_pt->max_permitted_error()=0.005;
731  Fluid_mesh_pt->min_permitted_error()=0.001;
732  Fluid_mesh_pt->max_element_size()=0.2;
733  Fluid_mesh_pt->min_element_size()=0.001;
734 
735  // Use coarser mesh during validation
736  if (CommandLineArgs::command_line_flag_has_been_set("--validation"))
737  {
738  Fluid_mesh_pt->min_element_size()=0.01;
739  }
740 
741  // Output boundary and mesh initial mesh for information
742  this->Fluid_mesh_pt->output_boundaries("boundaries.dat");
743  this->Fluid_mesh_pt->output("mesh.dat");
744 
745  // Set boundary condition and complete the build of all elements
746  complete_problem_setup();
747 
748  // Construct the mesh of free surface elements
749  Free_surface_mesh_pt=new Mesh;
750  create_free_surface_elements();
751 
752  // Combine meshes
753  //---------------
754 
755  // Add Fluid_mesh_pt sub meshes
756  this->add_sub_mesh(Fluid_mesh_pt);
757 
758  // Add Free_surface sub meshes
759  this->add_sub_mesh(this->Free_surface_mesh_pt);
760 
761  // Build global mesh
762  this->build_global_mesh();
763 
764  // Setup equation numbering scheme
765  cout <<"Number of equations: " << this->assign_eqn_numbers() << std::endl;
766 
767 } // end_of_constructor
i
int i
Definition: BiCGSTAB_step_by_step.cpp:9
H
MatrixXf H
Definition: HessenbergDecomposition_matrixH.cpp:4
TwoLayerInterfaceProblem::Free_surface_mesh_pt
Mesh * Free_surface_mesh_pt
Pointers to mesh of free surface elements.
Definition: refineable_two_layer_interface.cc:533
TwoLayerInterfaceProblem::create_free_surface_elements
void create_free_surface_elements()
Create free surface elements.
Definition: refineable_two_layer_interface.cc:775
TwoLayerInterfaceProblem::complete_problem_setup
void complete_problem_setup()
Set boundary conditions and complete the build of all elements.
Definition: refineable_two_layer_interface.cc:825
TwoLayerInterfaceProblem::Fluid_mesh_pt
RefineableSolidTriangleMesh< ELEMENT > * Fluid_mesh_pt
Pointer to Fluid_mesh.
Definition: refineable_two_layer_interface.cc:537
TwoLayerInterfaceProblem::Outer_boundary_polyline_pt
TriangleMeshPolygon * Outer_boundary_polyline_pt
Triangle mesh polygon for outer boundary.
Definition: refineable_two_layer_interface.cc:543
oomph::DocInfo::set_directory
void set_directory(const std::string &directory)
Definition: oomph_utilities.cc:298
oomph::Mesh
Definition: mesh.h:67
oomph::Problem::add_time_stepper_pt
void add_time_stepper_pt(TimeStepper *const &time_stepper_pt)
Definition: problem.cc:1545
oomph::Problem::add_sub_mesh
unsigned add_sub_mesh(Mesh *const &mesh_pt)
Definition: problem.h:1330
oomph::Problem::build_global_mesh
void build_global_mesh()
Definition: problem.cc:1493
oomph::Problem::assign_eqn_numbers
unsigned long assign_eqn_numbers(const bool &assign_local_eqn_numbers=true)
Definition: problem.cc:1989
oomph::Problem::time_stepper_pt
TimeStepper *& time_stepper_pt()
Definition: problem.h:1524
oomph::TriangleMeshClosedCurve
Base class defining a closed curve for the Triangle mesh generation.
Definition: unstructured_two_d_mesh_geometry_base.h:1339
oomph::TriangleMeshCurveSection::connect_initial_vertex_to_polyline
void connect_initial_vertex_to_polyline(TriangleMeshPolyLine *polyline_pt, const unsigned &vertex_number, const double &tolerance_for_connection=1.0e-14)
Definition: unstructured_two_d_mesh_geometry_base.cc:1120
oomph::TriangleMeshCurveSection::connect_final_vertex_to_polyline
void connect_final_vertex_to_polyline(TriangleMeshPolyLine *polyline_pt, const unsigned &vertex_number, const double &tolerance_for_connection=1.0e-14)
Definition: unstructured_two_d_mesh_geometry_base.cc:1189
oomph::TriangleMeshOpenCurve
Definition: unstructured_two_d_mesh_geometry_base.h:1642
oomph::TriangleMeshParameters
Definition: triangle_mesh.template.h:94
oomph::TriangleMeshPolyLine
Class defining a polyline for use in Triangle Mesh generation.
Definition: unstructured_two_d_mesh_geometry_base.h:868
oomph::TriangleMeshPolygon
Class defining a closed polygon for the Triangle mesh generation.
Definition: unstructured_two_d_mesh_geometry_base.h:1451
oomph::Vector
Definition: oomph-lib/src/generic/Vector.h:58
oomph::Z2ErrorEstimator
Definition: error_estimator.h:266
MeshRefinement::error_estimator_pt
Z2ErrorEstimator * error_estimator_pt
Definition: MortaringCantileverCompareToNonMortaring.cpp:190
Problem_Parameter::Interface_Height
double Interface_Height
Definition: refineable_two_layer_interface.cc:329
Problem_Parameter::Doc_info
DocInfo Doc_info
Doc info.
Definition: refineable_two_layer_interface.cc:291
Problem_Parameter::Length
double Length
Length of the channel.
Definition: refineable_two_layer_interface.cc:323
Problem_Parameter::Height
double Height
Definition: refineable_two_layer_interface.cc:326
oomph::CommandLineArgs::command_line_flag_has_been_set
bool command_line_flag_has_been_set(const std::string &flag)
Definition: oomph_utilities.cc:501

References oomph::TriangleMeshParameters::add_region_coordinates(), oomph::CommandLineArgs::command_line_flag_has_been_set(), oomph::TriangleMeshCurveSection::connect_final_vertex_to_polyline(), oomph::TriangleMeshCurveSection::connect_initial_vertex_to_polyline(), Problem_Parameter::Doc_info, oomph::TriangleMeshParameters::element_area(), MeshRefinement::error_estimator_pt, H, Problem_Parameter::Height, i, Problem_Parameter::Interface_Height, oomph::TriangleMeshParameters::internal_closed_curve_pt(), oomph::TriangleMeshParameters::internal_open_curves_pt(), Problem_Parameter::Length, and oomph::DocInfo::set_directory().

◆ ~TwoLayerInterfaceProblem()

template<class ELEMENT >
TwoLayerInterfaceProblem< ELEMENT >::~TwoLayerInterfaceProblem ( )
inline

Destructor.

361  {
362  // Fluid timestepper
363  delete this->time_stepper_pt(0);
364 
365  // Kill data associated with outer boundary
366  unsigned n=Outer_boundary_polyline_pt->npolyline();
367  for (unsigned j=0;j<n;j++)
368  {
369  delete Outer_boundary_polyline_pt->polyline_pt(j);
370  }
371  delete Outer_boundary_polyline_pt;
372 
373  // Flush element of free surface elements
374  delete_free_surface_elements();
375  delete Free_surface_mesh_pt;
376 
377  // Delete error estimator
378  delete Fluid_mesh_pt->spatial_error_estimator_pt();
379 
380  // Delete fluid mesh
381  delete Fluid_mesh_pt;
382 
383  // Delete the global pressure drop data
384  delete Drop_pressure_data_pt;
385 
386  // Kill const eqn
387  delete Problem_Parameter::Constitutive_law_pt;
388 
389  }
n
const unsigned n
Definition: CG3DPackingUnitTest.cpp:11
TwoLayerInterfaceProblem::delete_free_surface_elements
void delete_free_surface_elements()
Delete free surface elements.
Definition: refineable_two_layer_interface.cc:512
TwoLayerInterfaceProblem::Drop_pressure_data_pt
Data * Drop_pressure_data_pt
Pointer to a global drop pressure datum.
Definition: refineable_two_layer_interface.cc:546
oomph::TriangleMeshPolygon::npolyline
unsigned npolyline() const
Number of constituent polylines.
Definition: unstructured_two_d_mesh_geometry_base.h:1482
oomph::TriangleMeshPolygon::polyline_pt
TriangleMeshPolyLine * polyline_pt(const unsigned &i) const
Pointer to i-th constituent polyline.
Definition: unstructured_two_d_mesh_geometry_base.h:1488
Problem_Parameter::Constitutive_law_pt
ConstitutiveLaw * Constitutive_law_pt
Constitutive law used to determine the mesh deformation.
Definition: jeffery_orbit.cc:82
j
std::ptrdiff_t j
Definition: tut_arithmetic_redux_minmax.cpp:2

References Problem_Parameter::Constitutive_law_pt, j, and n.

Member Function Documentation

◆ actions_after_adapt()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::actions_after_adapt ( )
inlinevirtual

Actions after adapt: Rebuild the mesh of free surface elements.

Reimplemented from oomph::Problem.

406  {
407  // Create the elements that impose the displacement constraint
408  create_free_surface_elements();
409 
410  // Rebuild the Problem's global mesh from its various sub-meshes
411  this->rebuild_global_mesh();
412 
413  // Setup the problem again -- remember that fluid mesh has been
414  // completely rebuilt and its element's don't have any
415  // pointers to Re etc. yet
416  complete_problem_setup();
417 
418  }// end of actions_after_adapt
oomph::Problem::rebuild_global_mesh
void rebuild_global_mesh()
Definition: problem.cc:1533

◆ actions_after_newton_solve()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::actions_after_newton_solve ( )
inlinevirtual

Update the after solve (empty)

Reimplemented from oomph::Problem.

422 {}

◆ actions_before_adapt()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::actions_before_adapt ( )
inlinevirtual

Actions before adapt: Wipe the mesh of free surface elements.

Reimplemented from oomph::Problem.

394  {
395  // Kill the elements and wipe surface mesh
396  delete_free_surface_elements();
397 
398  // Rebuild the Problem's global mesh from its various sub-meshes
399  this->rebuild_global_mesh();
400 
401  }// end of actions_before_adapt

◆ actions_before_newton_solve()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::actions_before_newton_solve ( )
inlinevirtual

Update the problem specs before solve.

Reimplemented from oomph::Problem.

426  {
427  //Reset the Lagrangian coordinates of the nodes to be the current
428  //Eulerian coordinates -- this makes the current configuration
429  //stress free
430  Fluid_mesh_pt->set_lagrangian_nodal_coordinates();
431  }

◆ complete_problem_setup()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::complete_problem_setup

Set boundary conditions and complete the build of all elements.

826  {
827  // Re-set the boundary conditions for fluid problem: All nodes are
828  // free by default -- just pin the ones that have Dirichlet conditions
829  // here.
830  unsigned nbound=Fluid_mesh_pt->nboundary();
831  for(unsigned ibound=0;ibound<nbound;ibound++)
832  {
833  unsigned num_nod=Fluid_mesh_pt->nboundary_node(ibound);
834  for (unsigned inod=0;inod<num_nod;inod++)
835  {
836  // Get node
837  Node* nod_pt=Fluid_mesh_pt->boundary_node_pt(ibound,inod);
838 
839  //Pin both velocities on side boundaries (1 and 3)
840  if((ibound==1) || (ibound==3))
841  {
842  nod_pt->pin(0);
843  nod_pt->pin(1);
844  }
845 
846  //If it's the inflow or outflow pin only the horizontal velocity
847  if((ibound==0) || (ibound==2)) {nod_pt->pin(0);}
848 
849  // Pin horizontal pseudo-solid positions
850  SolidNode* solid_node_pt = dynamic_cast<SolidNode*>(nod_pt);
851  solid_node_pt->pin_position(0);
852 
853  //Pin the vertical position on the upper and lower walls
854  if((ibound==1) || (ibound==3))
855  {
856  solid_node_pt->pin_position(1);
857  }
858  else
859  {
860  solid_node_pt->unpin_position(1);
861  }
862  } //End of loop over nodes
863  } // end loop over boundaries
864 
865  // Complete the build of all elements so they are fully functional
866  // Remember that adaptation for triangle meshes involves a complete
867  // regneration of the mesh (rather than splitting as in tree-based
868  // meshes where such parameters can be passed down from the father
869  // element!)
870  unsigned n_element = Fluid_mesh_pt->nelement();
871  for(unsigned e=0;e<n_element;e++)
872  {
873  // Upcast from GeneralisedElement to the present element
874  ELEMENT* el_pt = dynamic_cast<ELEMENT*>(Fluid_mesh_pt->element_pt(e));
875 
876  // Set the Reynolds number
877  el_pt->re_pt() = &Problem_Parameter::Re;
878 
879  // Set the Womersley number (same as Re since St=1)
880  el_pt->re_st_pt() = &Problem_Parameter::ReSt;
881 
882  // Set the product of the Reynolds number and the inverse of the
883  // Froude number
884  el_pt->re_invfr_pt() = &Problem_Parameter::ReInvFr;
885 
886  // Set the direction of gravity
887  el_pt->g_pt() = &Problem_Parameter::G;
888 
889  // Set the constitutive law for pseudo-elastic mesh deformation
890  el_pt->constitutive_law_pt()=Problem_Parameter::Constitutive_law_pt;
891  }
892 
893  //For the elements in the upper region (region 0),
894  //set the viscosity ratio
895  n_element = Fluid_mesh_pt->nregion_element(1);
896  for(unsigned e=0;e<n_element;e++)
897  {
898  // Upcast from GeneralisedElement to the present element
899  ELEMENT* el_pt =
900  dynamic_cast<ELEMENT*>(Fluid_mesh_pt->region_element_pt(1,e));
901 
902  el_pt->viscosity_ratio_pt() = &Problem_Parameter::Viscosity_Ratio;
903 
904  el_pt->density_ratio_pt() = &Problem_Parameter::Density_Ratio;
905  }
906 
907 
908  // Re-apply boundary values on Dirichlet boundary conditions
909  // (Boundary conditions are ignored when the solution is transferred
910  // from the old to the new mesh by projection; this leads to a slight
911  // change in the boundary values (which are, of course, never changed,
912  // unlike the actual unknowns for which the projected values only
913  // serve as an initial guess)
914 
915  // Set velocity and history values of velocity on walls
916  nbound=this->Fluid_mesh_pt->nboundary();
917  for(unsigned ibound=0;ibound<nbound;++ibound)
918  {
919  // Loop over nodes on this boundary
920  unsigned num_nod=this->Fluid_mesh_pt->nboundary_node(ibound);
921  for (unsigned inod=0;inod<num_nod;inod++)
922  {
923  // Get node
924  Node* nod_pt=this->Fluid_mesh_pt->boundary_node_pt(ibound,inod);
925 
926  // Get number of previous (history) values
927  unsigned n_prev=nod_pt->time_stepper_pt()->nprev_values();
928 
929  //If we are on the upper or lower walls
930  // Velocity is and was zero at all previous times
931  if((ibound==1) || (ibound==3))
932  {
933  //Loop over time history values
934  for (unsigned t=0;t<=n_prev;t++)
935  {
936  nod_pt->set_value(t,0,0.0);
937  nod_pt->set_value(t,1,0.0);
938 
939  // Nodes have always been there...
940  nod_pt->x(t,0)=nod_pt->x(0,0);
941  nod_pt->x(t,1)=nod_pt->x(0,1);
942  }
943  }
944  //If we are on the side wals there is no horizontal velocity or
945  //change in horizontal position
946  if((ibound==0) || (ibound==2))
947  {
948  for (unsigned t=0;t<=n_prev;t++)
949  {
950  nod_pt->set_value(t,0,0.0);
951  // Nodes have always been there...
952  nod_pt->x(t,0)=nod_pt->x(0,0);
953  }
954  }
955  //But there is a change in vertical position!
956  }
957  } //End of loop over boundaries
958 
959  fix_pressure(0,0,0.0);
960 
961  }
e
Array< double, 1, 3 > e(1./3., 0.5, 2.)
TwoLayerInterfaceProblem::fix_pressure
void fix_pressure(const unsigned &e, const unsigned &pdof, const double &pvalue)
Fix pressure in element e at pressure dof pdof and set to pvalue.
Definition: refineable_two_layer_interface.cc:495
oomph::Data::pin
void pin(const unsigned &i)
Pin the i-th stored variable.
Definition: nodes.h:385
oomph::Data::time_stepper_pt
TimeStepper *& time_stepper_pt()
Return the pointer to the timestepper.
Definition: nodes.h:238
oomph::Data::set_value
void set_value(const unsigned &i, const double &value_)
Definition: nodes.h:271
oomph::Node
Definition: nodes.h:906
oomph::Node::x
double & x(const unsigned &i)
Return the i-th nodal coordinate.
Definition: nodes.h:1060
oomph::SolidNode
Definition: nodes.h:1686
oomph::SolidNode::pin_position
void pin_position(const unsigned &i)
Pin the nodal position.
Definition: nodes.h:1816
oomph::SolidNode::unpin_position
void unpin_position(const unsigned &i)
Unpin the nodal position.
Definition: nodes.h:1829
oomph::TimeStepper::nprev_values
virtual unsigned nprev_values() const =0
Number of previous values available: 0 for static, 1 for BDF<1>,...
Problem_Parameter::ReSt
double ReSt
Womersley number (Reynolds x Strouhal)
Definition: refineable_two_layer_interface.cc:300
Problem_Parameter::G
Vector< double > G(2)
Direction of gravity.
Problem_Parameter::Density_Ratio
double Density_Ratio
Definition: refineable_two_layer_interface.cc:311
Problem_Parameter::ReInvFr
double ReInvFr
Product of Reynolds number and inverse of Froude number.
Definition: refineable_two_layer_interface.cc:303
Problem_Parameter::Viscosity_Ratio
double Viscosity_Ratio
Definition: refineable_two_layer_interface.cc:307
Problem_Parameter::Re
double Re
Reynolds number.
Definition: jeffery_orbit.cc:59
plotPSD.t
t
Definition: plotPSD.py:36

References Problem_Parameter::Constitutive_law_pt, Problem_Parameter::Density_Ratio, e(), Problem_Parameter::G, oomph::TimeStepper::nprev_values(), oomph::Data::pin(), oomph::SolidNode::pin_position(), Problem_Parameter::Re, Problem_Parameter::ReInvFr, Problem_Parameter::ReSt, oomph::Data::set_value(), plotPSD::t, oomph::Data::time_stepper_pt(), oomph::SolidNode::unpin_position(), Problem_Parameter::Viscosity_Ratio, and oomph::Node::x().

◆ compute_error_estimate()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::compute_error_estimate ( double &  max_err,
double &  min_err 
)

Compute the error estimates and assign to elements for plotting.

Compute error estimates and assign to elements for plotting.

1035 {
1036  // Get error estimator
1037  ErrorEstimator* err_est_pt=Fluid_mesh_pt->spatial_error_estimator_pt();
1038 
1039  // Get/output error estimates
1040  unsigned nel=Fluid_mesh_pt->nelement();
1041  Vector<double> elemental_error(nel);
1042 
1043  // We need a dynamic cast, get_element_errors from the Fluid_mesh_pt
1044  // Dynamic cast is used because get_element_errors require a Mesh* ans
1045  // not a SolidMesh*
1046  Mesh* fluid_mesh_pt=dynamic_cast<Mesh*>(Fluid_mesh_pt);
1047  err_est_pt->get_element_errors(fluid_mesh_pt,
1048  elemental_error);
1049 
1050  // Set errors for post-processing and find extrema
1051  max_err=0.0;
1052  min_err=DBL_MAX;
1053  for (unsigned e=0;e<nel;e++)
1054  {
1055  dynamic_cast<MyCrouzeixRaviartElement*>(Fluid_mesh_pt->element_pt(e))->
1056  set_error(elemental_error[e]);
1057 
1058  max_err=std::max(max_err,elemental_error[e]);
1059  min_err=std::min(min_err,elemental_error[e]);
1060  }
1061 
1062 }
oomph::ErrorEstimator
Base class for spatial error estimators.
Definition: error_estimator.h:40
oomph::ErrorEstimator::get_element_errors
void get_element_errors(Mesh *&mesh_pt, Vector< double > &elemental_error)
Definition: error_estimator.h:56
oomph::MyCrouzeixRaviartElement
Overload CrouzeixRaviart element to modify output.
Definition: refineable_two_layer_interface.cc:54
min
#define min(a, b)
Definition: datatypes.h:22
max
#define max(a, b)
Definition: datatypes.h:23
set_error
void set_error(const double &error)
Set error value for post-processing.
Definition: overloaded_element_body.h:432

References e(), oomph::ErrorEstimator::get_element_errors(), max, min, and set_error().

◆ create_free_surface_elements()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::create_free_surface_elements
private

Create free surface elements.

Create elements that impose the kinematic and dynamic bcs for the pseudo-solid fluid mesh

776 {
777 
778  //Loop over the free surface boundaries
779  unsigned nb=Fluid_mesh_pt->nboundary();
780  for(unsigned b=4;b<nb;b++)
781  {
782  // Note: region is important
783  // How many bulk fluid elements are adjacent to boundary b in region 0?
784  unsigned n_element = Fluid_mesh_pt->nboundary_element_in_region(b,0);
785 
786  // Loop over the bulk fluid elements adjacent to boundary b?
787  for(unsigned e=0;e<n_element;e++)
788  {
789  // Get pointer to the bulk fluid element that is
790  // adjacent to boundary b in region 0
791  ELEMENT* bulk_elem_pt = dynamic_cast<ELEMENT*>(
792  Fluid_mesh_pt->boundary_element_in_region_pt(b,0,e));
793 
794  //Find the index of the face of element e along boundary b in region 0
795  int face_index = Fluid_mesh_pt->face_index_at_boundary_in_region(b,0,e);
796 
797  // Create new element
798  ElasticLineFluidInterfaceElement<ELEMENT>* el_pt =
799  new ElasticLineFluidInterfaceElement<ELEMENT>(
800  bulk_elem_pt,face_index);
801 
802  // Add it to the mesh
803  Free_surface_mesh_pt->add_element_pt(el_pt);
804 
805  //Add the appropriate boundary number
806  el_pt->set_boundary_number_in_bulk_mesh(b);
807 
808  //Specify the Strouhal number
809  el_pt->st_pt() = &Problem_Parameter::St;
810 
811  //Specify the capillary number
812  el_pt->ca_pt() = &Problem_Parameter::Ca;
813  }
814  }
815 }
b
Scalar * b
Definition: benchVecAdd.cpp:17
oomph::ElasticLineFluidInterfaceElement
Specialise the elastic update template class to concrete 1D case.
Definition: specific_node_update_interface_elements.h:1220
oomph::FaceElement::set_boundary_number_in_bulk_mesh
void set_boundary_number_in_bulk_mesh(const unsigned &b)
Set function for the boundary number in bulk mesh.
Definition: elements.h:4482
oomph::FluidInterfaceElement::ca_pt
double *& ca_pt()
Pointer to the Capillary number.
Definition: interface_elements.h:492
oomph::FluidInterfaceElement::st_pt
double *& st_pt()
The pointer to the Strouhal number.
Definition: interface_elements.h:504
oomph::Mesh::add_element_pt
void add_element_pt(GeneralisedElement *const &element_pt)
Add a (pointer to) an element to the mesh.
Definition: mesh.h:617
nb
int nb
Definition: level2_impl.h:286
Problem_Parameter::St
double St
Strouhal number.
Definition: jeffery_orbit.cc:62
Problem_Parameter::Ca
double Ca
Capillary number.
Definition: refineable_two_layer_interface.cc:314

References b, Problem_Parameter::Ca, oomph::FluidInterfaceElement::ca_pt(), e(), nb, oomph::FaceElement::set_boundary_number_in_bulk_mesh(), Problem_Parameter::St, and oomph::FluidInterfaceElement::st_pt().

◆ deform_interface()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::deform_interface ( const double &  epsilon,
const unsigned &  n_periods 
)
inline

Function to deform the interface.

471  {
472  // Determine number of nodes in the "bulk" mesh
473  const unsigned n_node = Fluid_mesh_pt->nnode();
474 
475  // Loop over all nodes in mesh
476  for(unsigned n=0;n<n_node;n++)
477  {
478  // Determine eulerian position of node
479  const double current_x_pos = Fluid_mesh_pt->node_pt(n)->x(0);
480  const double current_y_pos = Fluid_mesh_pt->node_pt(n)->x(1);
481 
482  // Determine new vertical position of node
483  const double new_y_pos = current_y_pos
484  + (1.0-fabs(1.0-current_y_pos))*epsilon
485  *(cos(2.0*n_periods*MathematicalConstants::Pi*current_x_pos/Problem_Parameter::Length));
486 
487  // Set new position
488  Fluid_mesh_pt->node_pt(n)->x(1) = new_y_pos;
489  }
490 } // End of deform_interface
cos
AnnoyingScalar cos(const AnnoyingScalar &x)
Definition: AnnoyingScalar.h:136
BiharmonicTestFunctions2::Pi
double Pi
Definition: two_d_biharmonic.cc:235
boost::multiprecision::fabs
Real fabs(const Real &a)
Definition: boostmultiprec.cpp:117
oomph::SarahBL::epsilon
double epsilon
Definition: osc_ring_sarah_asymptotics.h:43

References cos(), oomph::SarahBL::epsilon, boost::multiprecision::fabs(), Problem_Parameter::Length, n, and BiharmonicTestFunctions2::Pi.

◆ delete_free_surface_elements()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::delete_free_surface_elements ( )
inlineprivate

Delete free surface elements.

513  {
514  // How many surface elements are in the surface mesh
515  unsigned n_element = Free_surface_mesh_pt->nelement();
516 
517  // Loop over the surface elements
518  for(unsigned e=0;e<n_element;e++)
519  {
520  // Kill surface element
521  delete Free_surface_mesh_pt->element_pt(e);
522  }
523 
524 
525  // Wipe the mesh
526  Free_surface_mesh_pt->flush_element_and_node_storage();
527 
528 
529  } // end of delete_free_surface_elements
oomph::Mesh::flush_element_and_node_storage
void flush_element_and_node_storage()
Definition: mesh.h:407
oomph::Mesh::element_pt
GeneralisedElement *& element_pt(const unsigned long &e)
Return pointer to element e.
Definition: mesh.h:448
oomph::Mesh::nelement
unsigned long nelement() const
Return number of elements in the mesh.
Definition: mesh.h:590

References e().

◆ doc_solution()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::doc_solution ( const std::string &  comment = "")

Doc the solution.

970 {
971 
972  // Output the time
973  cout << "Time is now " << time_pt()->time() << std::endl;
974 
975  double min_x_coordinate = 2.0;
976  unsigned min_boundary_node = 0;
977  //Find the left-most node on the boundary
978  unsigned n_bound = Fluid_mesh_pt->nboundary_node(4);
979  for(unsigned n=0;n<n_bound;++n)
980  {
981  Node* nod_pt = Fluid_mesh_pt->boundary_node_pt(4,n);
982  if(nod_pt->x(0) < min_x_coordinate)
983  {
984  min_x_coordinate = nod_pt->x(0);
985  min_boundary_node = n;
986  }
987  }
988 
989  // Document time and vertical position of left hand side of interface
990  // in trace file
991  Problem_Parameter::Trace_file
992  << time_pt()->time() << " "
993  << Fluid_mesh_pt->boundary_node_pt(4,min_boundary_node)->x(1) << std::endl;
994 
995  ofstream some_file;
996  char filename[100];
997 
998  // Set number of plot points (in each coordinate direction)
999  const unsigned npts = 5;
1000 
1001  // Open solution output file
1002  sprintf(filename,"%s/soln%i.dat",
1003  Problem_Parameter::Doc_info.directory().c_str(),
1004  Problem_Parameter::Doc_info.number());
1005  some_file.open(filename);
1006 
1007  // Output solution to file
1008  Fluid_mesh_pt->output(some_file,npts);
1009 
1010  // Close solution output file
1011  some_file.close();
1012 
1013  // Open interface solution output file
1014  sprintf(filename,"%s/interface_soln%i.dat",
1015  Problem_Parameter::Doc_info.directory().c_str(),
1016  Problem_Parameter::Doc_info.number());
1017  some_file.open(filename);
1018 
1019  // Output solution to file
1020  Free_surface_mesh_pt->output(some_file,npts);
1021 
1022  // Close solution output file
1023  some_file.close();
1024 
1025  // Increment the doc_info number
1026  Problem_Parameter::Doc_info.number()++;
1027 }
oomph::DocInfo::number
unsigned & number()
Number used (e.g.) for labeling output files.
Definition: oomph_utilities.h:554
oomph::Mesh::output
void output(std::ostream &outfile)
Output for all elements.
Definition: mesh.cc:2027
oomph::Problem::time_pt
Time *& time_pt()
Return a pointer to the global time object.
Definition: problem.h:1504
oomph::Time::time
double & time()
Return the current value of the continuous time.
Definition: timesteppers.h:123
MergeRestartFiles.filename
string filename
Definition: MergeRestartFiles.py:39
Problem_Parameter::Trace_file
ofstream Trace_file
Trace file.
Definition: refineable_two_layer_interface.cc:335

References Problem_Parameter::Doc_info, MergeRestartFiles::filename, n, oomph::DocInfo::number(), Problem_Parameter::Trace_file, and oomph::Node::x().

◆ fix_pressure()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::fix_pressure ( const unsigned &  e,
const unsigned &  pdof,
const double &  pvalue 
)
inline

Fix pressure in element e at pressure dof pdof and set to pvalue.

498  {
499  // Fix the pressure at that element
500  dynamic_cast<ELEMENT*>(Fluid_mesh_pt->element_pt(e))->
501  fix_pressure(pdof,pvalue);
502  }

References e().

◆ set_initial_condition()

template<class ELEMENT >
void TwoLayerInterfaceProblem< ELEMENT >::set_initial_condition ( )
inlinevirtual

Set the initial conditions.

Reimplemented from oomph::Problem.

445 {
446  // Determine number of nodes in mesh
447  const unsigned n_node = Fluid_mesh_pt->nnode();
448 
449  // Loop over all nodes in mesh
450  for(unsigned n=0;n<n_node;n++)
451  {
452  // Loop over the two velocity components
453  for(unsigned i=0;i<2;i++)
454  {
455  // Set velocity component i of node n to zero
456  Fluid_mesh_pt->node_pt(n)->set_value(i,0.0);
457  }
458  }
459 
460  // Initialise the previous velocity values for timestepping
461  // corresponding to an impulsive start
462  assign_initial_values_impulsive();
463 
464 } // End of set_initial_condition
oomph::Problem::assign_initial_values_impulsive
void assign_initial_values_impulsive()
Definition: problem.cc:11499

References i, and n.

Member Data Documentation

◆ Drop_polygon_pt

template<class ELEMENT >
Vector<TriangleMeshPolygon*> TwoLayerInterfaceProblem< ELEMENT >::Drop_polygon_pt
private

Vector storing pointer to the drop polygons.

◆ Drop_pressure_data_pt

template<class ELEMENT >
Data* TwoLayerInterfaceProblem< ELEMENT >::Drop_pressure_data_pt
private

Pointer to a global drop pressure datum.

◆ Fluid_mesh_pt

template<class ELEMENT >
RefineableSolidTriangleMesh<ELEMENT>* TwoLayerInterfaceProblem< ELEMENT >::Fluid_mesh_pt
private

Pointer to Fluid_mesh.

◆ Free_surface_mesh_pt

template<class ELEMENT >
Mesh* TwoLayerInterfaceProblem< ELEMENT >::Free_surface_mesh_pt
private

Pointers to mesh of free surface elements.

◆ Hijacked_element_pt

template<class ELEMENT >
ELEMENT* TwoLayerInterfaceProblem< ELEMENT >::Hijacked_element_pt
private

Pointer to hijacked element.

◆ Initial_value_for_drop_pressure

template<class ELEMENT >
double TwoLayerInterfaceProblem< ELEMENT >::Initial_value_for_drop_pressure
private

Backed up drop pressure between adaptations.

◆ Outer_boundary_polyline_pt

template<class ELEMENT >
TriangleMeshPolygon* TwoLayerInterfaceProblem< ELEMENT >::Outer_boundary_polyline_pt
private

Triangle mesh polygon for outer boundary.

◆ Use_volume_constraint

template<class ELEMENT >
bool TwoLayerInterfaceProblem< ELEMENT >::Use_volume_constraint
private

Bool to indicate if volume constraint is applied (only for steady run)

The documentation for this class was generated from the following file: