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PdV_kernel_c.c
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PdV_kernel_c.c
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/*Crown Copyright 2012 AWE.
*
* This file is part of CloverLeaf.
*
* CloverLeaf is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* CloverLeaf is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* CloverLeaf. If not, see http://www.gnu.org/licenses/. */
/**
* @brief C PdV kernel.
* @author Wayne Gaudin
* @details Calculates the change in energy and density in a cell using the
* change on cell volume due to the velocity gradients in a cell. The time
* level of the velocity data depends on whether it is invoked as the
* predictor or corrector.
*/
#include <stdio.h>
#include <stdlib.h>
#include "ftocmacros.h"
#include <math.h>
void pdv_kernel_c_(int *prdct,
int *xmin,int *xmax,int *ymin,int *ymax,
double *dtbyt,
double *xarea,
double *yarea,
double *volume,
double *density0,
double *density1,
double *energy0,
double *energy1,
double *pressure,
double *viscosity,
double *xvel0,
double *xvel1,
double *yvel0,
double *yvel1,
double *volume_change)
{
int predict=*prdct;
int x_min=*xmin;
int x_max=*xmax;
int y_min=*ymin;
int y_max=*ymax;
double dt=*dtbyt;
int j,k;
double recip_volume,energy_change,min_cell_volume,right_flux,left_flux,top_flux,bottom_flux,total_flux;
#pragma omp parallel
{
if(predict==0) {
#pragma omp for private(right_flux,left_flux,top_flux,bottom_flux,total_flux,min_cell_volume,energy_change,recip_volume,j)
for (k=y_min;k<=y_max;k++) {
#pragma ivdep
for (j=x_min;j<=x_max;j++) {
left_flux= (xarea[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)])
*(xvel0[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)]
+xvel0[FTNREF2D(j ,k+1,x_max+5,x_min-2,y_min-2)]
+xvel0[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)]
+xvel0[FTNREF2D(j ,k+1,x_max+5,x_min-2,y_min-2)])
*0.25*dt*0.5;
right_flux= (xarea[FTNREF2D(j+1,k ,x_max+5,x_min-2,y_min-2)])
*(xvel0[FTNREF2D(j+1,k ,x_max+5,x_min-2,y_min-2)]
+xvel0[FTNREF2D(j+1,k+1,x_max+5,x_min-2,y_min-2)]
+xvel0[FTNREF2D(j+1,k ,x_max+5,x_min-2,y_min-2)]
+xvel0[FTNREF2D(j+1,k+1,x_max+5,x_min-2,y_min-2)])
*0.25*dt*0.5;
bottom_flux=(yarea[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)])
*(yvel0[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)]
+yvel0[FTNREF2D(j+1,k ,x_max+5,x_min-2,y_min-2)]
+yvel0[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)]
+yvel0[FTNREF2D(j+1,k ,x_max+5,x_min-2,y_min-2)])
*0.25*dt*0.5;
top_flux= (yarea[FTNREF2D(j ,k+1,x_max+4,x_min-2,y_min-2)])
*(yvel0[FTNREF2D(j ,k+1,x_max+5,x_min-2,y_min-2)]
+yvel0[FTNREF2D(j+1,k+1,x_max+5,x_min-2,y_min-2)]
+yvel0[FTNREF2D(j ,k+1,x_max+5,x_min-2,y_min-2)]
+yvel0[FTNREF2D(j+1,k+1,x_max+5,x_min-2,y_min-2)])
*0.25*dt*0.5;
total_flux=right_flux-left_flux+top_flux-bottom_flux;
volume_change[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)]=volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]
/(volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]+total_flux);
min_cell_volume=MIN(volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]+right_flux-left_flux+top_flux-bottom_flux
,MIN(volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]+right_flux-left_flux
,volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]+top_flux-bottom_flux));
recip_volume=1.0/volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)];
energy_change=(pressure[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]/density0[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]
+viscosity[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]/density0[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)])
*total_flux*recip_volume;
energy1[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]=energy0[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]-energy_change;
density1[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]=density0[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]
*volume_change[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)];
}
}
}
else{
#pragma omp for private(right_flux,left_flux,top_flux,bottom_flux,total_flux,min_cell_volume,energy_change,recip_volume,j)
for (k=y_min;k<=y_max;k++) {
#pragma ivdep
for (j=x_min;j<=x_max;j++) {
left_flux= (xarea[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)])
*(xvel0[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)]
+xvel0[FTNREF2D(j ,k+1,x_max+5,x_min-2,y_min-2)]
+xvel1[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)]
+xvel1[FTNREF2D(j ,k+1,x_max+5,x_min-2,y_min-2)])
*0.25*dt;
right_flux= (xarea[FTNREF2D(j+1,k ,x_max+5,x_min-2,y_min-2)])
*(xvel0[FTNREF2D(j+1,k ,x_max+5,x_min-2,y_min-2)]
+xvel0[FTNREF2D(j+1,k+1,x_max+5,x_min-2,y_min-2)]
+xvel1[FTNREF2D(j+1,k ,x_max+5,x_min-2,y_min-2)]
+xvel1[FTNREF2D(j+1,k+1,x_max+5,x_min-2,y_min-2)])
*0.25*dt;
bottom_flux=(yarea[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)])
*(yvel0[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)]
+yvel0[FTNREF2D(j+1,k ,x_max+5,x_min-2,y_min-2)]
+yvel1[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)]
+yvel1[FTNREF2D(j+1,k ,x_max+5,x_min-2,y_min-2)])
*0.25*dt;
top_flux= (yarea[FTNREF2D(j ,k+1,x_max+4,x_min-2,y_min-2)])
*(yvel0[FTNREF2D(j ,k+1,x_max+5,x_min-2,y_min-2)]
+yvel0[FTNREF2D(j+1,k+1,x_max+5,x_min-2,y_min-2)]
+yvel1[FTNREF2D(j ,k+1,x_max+5,x_min-2,y_min-2)]
+yvel1[FTNREF2D(j+1,k+1,x_max+5,x_min-2,y_min-2)])
*0.25*dt;
total_flux=right_flux-left_flux+top_flux-bottom_flux;
volume_change[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)]=volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]
/(volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]+total_flux);
min_cell_volume=MIN(volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]+right_flux-left_flux+top_flux-bottom_flux
,MIN(volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]+right_flux-left_flux
,volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]+top_flux-bottom_flux));
recip_volume=1.0/volume[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)];
energy_change=(pressure[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]/density0[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]
+viscosity[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]/density0[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)])
*total_flux*recip_volume;
energy1[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]=energy0[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]-energy_change;
density1[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]=density0[FTNREF2D(j ,k ,x_max+4,x_min-2,y_min-2)]
*volume_change[FTNREF2D(j ,k ,x_max+5,x_min-2,y_min-2)];
}
}
}
}
}