oomph::deriv_functions::SimpleStiffTest Class Reference

Another stiff solution: Atkinson equation (8.1) pg 128. More...

#include <ode_example_functions.h>

Inheritance diagram for oomph::deriv_functions::SimpleStiffTest:

Public Member Functions
	SimpleStiffTest ()
	Constructor. More...
virtual	~SimpleStiffTest ()
	Virtual destructor. More...
Vector< double >	operator() (const double &t, const Vector< double > &x) const
	Function call. More...
Vector< double >	derivative (const double &t, const Vector< double > &x, const Vector< double > &u) const
	Derivative call. More...
Public Member Functions inherited from oomph::SolutionFunctorBase
virtual	~SolutionFunctorBase ()
	Virtual destructor. More...
virtual void	jacobian (const double &t, const Vector< double > &x, const Vector< double > &u, DenseMatrix< double > &jacobian) const
virtual bool	have_jacobian () const
	Is a jacobian function implemented? More...
virtual void	initialise_from_problem (const Problem *problem_pt)
	Overload to grab data from the problem. More...

Public Attributes
double	Lambda
double	Y_intial

Additional Inherited Members
Public Types inherited from oomph::SolutionFunctorBase
typedef double(*	TimeSpaceToDoubleFctPt) (const double &t, const Vector< double > &x)
	General function of space and time which returns a double. More...
typedef Vector< double >(*	TimeSpaceToDoubleVectFctPt) (const double &t, const Vector< double > &x)
	General function of space and time which returns a vector of doubles. More...
typedef Vector< double >(*	TimeSpaceValueToDoubleVectFctPt) (const double &t, const Vector< double > &x, const Vector< double > &u)

Detailed Description

Another stiff solution: Atkinson equation (8.1) pg 128.

Constructor & Destructor Documentation

SimpleStiffTest()

oomph::deriv_functions::SimpleStiffTest::SimpleStiffTest ( )

inline

Constructor.

   {
    Lambda = 100;
    Y_intial = 1;
   }

References Global_Parameters::Lambda.

~SimpleStiffTest()

virtual oomph::deriv_functions::SimpleStiffTest::~SimpleStiffTest ( )

inlinevirtual

Virtual destructor.

{}

Member Function Documentation

derivative()

Vector<double> oomph::deriv_functions::SimpleStiffTest::derivative ( const double &  t, const Vector< double > &  x, const Vector< double > &  u  ) const

inlinevirtual

Derivative call.

Implements oomph::SolutionFunctorBase.

   {
    Vector<double> deriv(1, 0.0);
    deriv[0] = -Lambda * u[0];
    return deriv;
   }

References Global_Parameters::Lambda.

operator()()

Vector<double> oomph::deriv_functions::SimpleStiffTest::operator() ( const double &  t, const Vector< double > &  x  ) const

inlinevirtual

Function call.

Implements oomph::SolutionFunctorBase.

   {
    Vector<double> values(1);
    values[0] = std::exp(-Lambda * t) * Y_intial;
    return values;
   }

References oomph::deriv_functions::exp(), Global_Parameters::Lambda, and plotPSD::t.

Member Data Documentation

Lambda

double oomph::deriv_functions::SimpleStiffTest::Lambda

Y_intial

double oomph::deriv_functions::SimpleStiffTest::Y_intial

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

• ode_example_functions.h