boussinesq_convection.cc File Reference

#include "generic.h"
#include "advection_diffusion.h"
#include "navier_stokes.h"
#include "multi_physics.h"
#include "meshes/rectangular_quadmesh.h"

Classes
class	ConvectionProblem< NST_ELEMENT, AD_ELEMENT >

Namespaces
	Global_Physical_Variables
	Global variables.

Functions
int	main (int argc, char **argv)
	Driver code for 2D Boussinesq convection problem. More...

Variables
Vector< double >	Global_Physical_Variables::Direction_of_gravity (2)
	Gravity vector. More...

Function Documentation

main()

int main	(	int argc	,
		char **	argv
	)

Driver code for 2D Boussinesq convection problem.

{
 
 // Set the direction of gravity
 Global_Physical_Variables::Direction_of_gravity[0] = 0.0;
 Global_Physical_Variables::Direction_of_gravity[1] = -1.0;
 
 //Construct our problem
 ConvectionProblem<BuoyantQCrouzeixRaviartElement<2> > problem;
 
 // Apply the boundary condition at time zero
 problem.set_boundary_conditions(0.0);
 
 //Perform a single steady Newton solve
 problem.steady_newton_solve();
 
 //Document the solution
 problem.doc_solution();
 
 //Set the timestep
 double dt = 0.1;
 
 //Initialise the value of the timestep and set an impulsive start
 problem.assign_initial_values_impulsive(dt);
 
 //Set the number of timesteps to our default value
 unsigned n_steps = 200;
 
 //If we have a command line argument, perform fewer steps 
 //(used for self-test runs)
 if(argc > 1) {n_steps = 5;}
 
 //Perform n_steps timesteps
 for(unsigned i=0;i<n_steps;++i)
  {
   problem.unsteady_newton_solve(dt);
   problem.doc_solution();
  }
 
} // end of main

References oomph::Global_Physical_Variables::Direction_of_gravity, i, and problem.