ShallowWater2DEigen.c File Reference

Contains the functions to compute left and right eigenvectors for the 2D shallow water equations. More...

#include <stdlib.h>
#include <math.h>
#include <basic.h>
#include <arrayfunctions.h>
#include <mathfunctions.h>
#include <physicalmodels/shallowwater2d.h>
#include <hypar.h>

Go to the source code of this file.

Functions
int	ShallowWater2DLeftEigenvectors (double *u, double *L, void *p, int dir)
int	ShallowWater2DRightEigenvectors (double *u, double *R, void *p, int dir)

Detailed Description

Contains the functions to compute left and right eigenvectors for the 2D shallow water equations.

Author

Debojyoti Ghosh

Definition in file ShallowWater2DEigen.c.

Function Documentation

ShallowWater2DLeftEigenvectors()

int ShallowWater2DLeftEigenvectors	(	double *	u,
		double *	L,
		void *	p,
		int	dir
	)

Compute the left eigenvections for the 2D shallow water equations. This function just calls the macro _ShallowWater2DLeftEigenvectors_ and is not used by any functions within the 2D shallow water module. However, it's necessary to define it and provide it to the the solver object (HyPar) so that it can then send it to interpolation functions for a characteristic-based reconstruction.

Parameters

u	Conserved solution at a grid point
L	Array of size nvar^2 = 3^2 to save the matrix of left eigenvectors in (row-major format).
p	Object of type ShallowWater2D with physics-related variables
dir	Spatial dimension

Definition at line 19 of file ShallowWater2DEigen.c.

{
  ShallowWater2D *param  = (ShallowWater2D*)  p;
  _ShallowWater2DLeftEigenvectors_(u,L,param,dir);
  return(0);
}

ShallowWater2DRightEigenvectors()

int ShallowWater2DRightEigenvectors	(	double *	u,
		double *	R,
		void *	p,
		int	dir
	)

Compute the right eigenvections for the 2D shallow water equations. This function just calls the macro _ShallowWater2DRightEigenvectors_ and is not used by any functions within the 2D shallow water module. However, it's necessary to define it and provide it to the the solver object (HyPar) so that it can then send it to interpolation functions for a characteristic-based reconstruction.

Parameters

u	Conserved solution at a grid point
R	Array of size nvar^2 = 3^2 to save the matrix of right eigenvectors in (row-major format).
p	Object of type ShallowWater2D with physics-related variables
dir	Spatial dimension

Definition at line 38 of file ShallowWater2DEigen.c.

{
  ShallowWater2D *param  = (ShallowWater2D*)  p;
  _ShallowWater2DRightEigenvectors_(u,R,param,dir);
  return(0);
}