init.c File Reference

#include "pluto.h"

Include dependency graph for init.c:

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Macros
#define	LEFTGOING   YES

Functions
void	Init (real *us, real x1, real x2, real x3)
void	Analysis (const Data *d, Grid *grid)
void	UserDefBoundary (const Data *d, RBox *box, int side, Grid *grid)
void	USERDEF_BOUNDARY (const Data *d, int side, Grid *grid)

Macro Definition Documentation

#define LEFTGOING   YES

Definition at line 3 of file init.c.

Function Documentation

void Analysis	(	const Data *	d,
		Grid *	grid
	)

Perform runtime data analysis.

Parameters

[in]	d	the PLUTO Data structure
[in]	grid	pointer to array of Grid structures

Compute volume-integrated magnetic pressure, Maxwell and Reynolds stresses. Save them to "averages.dat"

Definition at line 82 of file init.c.

{
}

void Init	(	real *	us,
		real	x1,
		real	x2,
		real	x3
	)

The Init() function can be used to assign initial conditions as as a function of spatial position.

Parameters

[out]	v	a pointer to a vector of primitive variables
[in]	x1	coordinate point in the 1st dimension
[in]	x2	coordinate point in the 2nd dimension
[in]	x3	coordinate point in the 3rdt dimension

The meaning of x1, x2 and x3 depends on the geometry:

Variable names are accessed by means of an index v[nv], where nv = RHO is density, nv = PRS is pressure, nv = (VX1, VX2, VX3) are the three components of velocity, and so forth.

Definition at line 6 of file init.c.

{
  #if EOS == IDEAL
   g_gamma = g_inputParam[GAMMA_EOS];
  #endif

#if LEFTGOING == YES
  if (x1 < 0.5){

    us[RHO] = g_inputParam[RHO_LEFT];
    us[VX1] = g_inputParam[VX_LEFT];
    us[VX2] = g_inputParam[VY_LEFT];
    us[VX3] = g_inputParam[VZ_LEFT];
    us[BX1] = g_inputParam[BX_CONST];
    us[BX2] = g_inputParam[BY_LEFT];
    us[BX3] = g_inputParam[BZ_LEFT];
    #if EOS == IDEAL
     us[PRS] = g_inputParam[PR_LEFT];
    #endif

  }else{

    us[RHO] = g_inputParam[RHO_RIGHT];
    us[VX1] = g_inputParam[VX_RIGHT];
    us[VX2] = g_inputParam[VY_RIGHT];
    us[VX3] = g_inputParam[VZ_RIGHT];
    us[BX1] = g_inputParam[BX_CONST];
    us[BX2] = g_inputParam[BY_RIGHT];
    us[BX3] = g_inputParam[BZ_RIGHT];
    #if EOS == IDEAL
     us[PRS] = g_inputParam[PR_RIGHT];
    #endif 
  }

#else 

  if (x1 > 0.5){

    us[RHO] = g_inputParam[RHO_LEFT];
    us[VX1] = -g_inputParam[VX_LEFT];
    us[VX2] = g_inputParam[VY_LEFT];
    us[VX3] = g_inputParam[VZ_LEFT];
    us[BX1] = -g_inputParam[BX_CONST];
    us[BX2] = g_inputParam[BY_LEFT];
    us[BX3] = g_inputParam[BZ_LEFT];
    #if EOS == IDEAL
     us[PRS] = g_inputParam[PR_LEFT];
    #endif

  }else{

    us[RHO] = g_inputParam[RHO_RIGHT];
    us[VX1] = -g_inputParam[VX_RIGHT];
    us[VX2] = g_inputParam[VY_RIGHT];
    us[VX3] = g_inputParam[VZ_RIGHT];
    us[BX1] = -g_inputParam[BX_CONST];
    us[BX2] = g_inputParam[BY_RIGHT];
    us[BX3] = g_inputParam[BZ_RIGHT];
    #if EOS == IDEAL
     us[PRS] = g_inputParam[PR_RIGHT];
    #endif
  }
#endif

  if (g_inputParam[DIVIDE_BY_4PI] > 0.5){
    us[BX1] /= sqrt(4.0*CONST_PI);
    us[BX2] /= sqrt(4.0*CONST_PI);
    us[BX3] /= sqrt(4.0*CONST_PI);
  }
}

void USERDEF_BOUNDARY	(	const Data *	d,
		int	side,
		Grid *	grid
	)

Definition at line 114 of file init.c.

{
}

void UserDefBoundary	(	const Data *	d,
		RBox *	box,
		int	side,
		Grid *	grid
	)

Assign user-defined boundary conditions.

Parameters

	[in/out]	d pointer to the PLUTO data structure containing cell-centered primitive quantities (d->Vc) and staggered magnetic fields (d->Vs, when used) to be filled.
[in]	box	pointer to a RBox structure containing the lower and upper indices of the ghost zone-centers/nodes or edges at which data values should be assigned.
[in]	side	specifies on which side boundary conditions need to be assigned. side can assume the following pre-definite values: X1_BEG, X1_END, X2_BEG, X2_END, X3_BEG, X3_END. The special value side == 0 is used to control a region inside the computational domain.
[in]	grid	pointer to an array of Grid structures.

Definition at line 91 of file init.c.

{ }