LBPM/tests/testGlobalMassFreeLee.cpp
2021-03-21 00:15:23 -04:00

102 lines
3.2 KiB
C++

#include <exception>
#include <fstream>
#include <iostream>
#include <stdexcept>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include "common/Utilities.h"
#include "models/FreeLeeModel.h"
//*******************************************************************
// Implementation of Free-Energy Two-Phase LBM (Lee model)
//*******************************************************************
int main( int argc, char **argv )
{
// Initialize
Utilities::startup( argc, argv );
// Load the input database
auto db = std::make_shared<Database>( argv[1] );
{ // Limit scope so variables that contain communicators will free before MPI_Finialize
Utilities::MPI comm( MPI_COMM_WORLD );
int rank = comm.getRank();
int nprocs = comm.getSize();
if (rank == 0){
printf("********************************************************\n");
printf("Running Free Energy Lee LBM \n");
printf("********************************************************\n");
}
// Initialize compute device
int device=ScaLBL_SetDevice(rank);
NULL_USE( device );
ScaLBL_DeviceBarrier();
comm.barrier();
PROFILE_ENABLE(1);
//PROFILE_ENABLE_TRACE();
//PROFILE_ENABLE_MEMORY();
PROFILE_SYNCHRONIZE();
PROFILE_START("Main");
Utilities::setErrorHandlers();
auto filename = argv[1];
ScaLBL_FreeLeeModel LeeModel( rank,nprocs,comm );
LeeModel.ReadParams( filename );
LeeModel.SetDomain();
LeeModel.ReadInput();
LeeModel.Create_TwoFluid();
LeeModel.Initialize_TwoFluid();
/* check neighbors */
/* Copy the initial density to test that global mass is conserved */
int Nx = LeeModel.Dm->Nx;
int Ny = LeeModel.Dm->Ny;
int Nz = LeeModel.Dm->Nz;
DoubleArray DensityInit(Nx,Ny,Nz);
LeeModel.ScaLBL_Comm->RegularLayout(LeeModel.Map,LeeModel.Den,DensityInit);
double MLUPS = LeeModel.Run_TwoFluid(LeeModel.timestepMax);
DoubleArray DensityFinal(Nx,Ny,Nz);
LeeModel.ScaLBL_Comm->RegularLayout(LeeModel.Map,LeeModel.Den,DensityFinal);
DoubleArray DensityChange(Nx,Ny,Nz);
double totalChange=0.0;
for (int k=1; k<Nz-1; k++){
for (int j=1; j<Ny-1; j++){
for (int i=1; i<Nx-1; i++){
double change = DensityFinal(i,j,k)-DensityInit(i,j,k);
DensityChange(i,j,k) = change;
totalChange += change;
}
}
}
printf("Density change, %f\n", totalChange);
FILE *OUTFILE;
char LocalRankFilename[40];
sprintf(LocalRankFilename,"DensityChange.%05i.raw",rank);
OUTFILE = fopen(LocalRankFilename,"wb");
fwrite(DensityChange.data(),8,Nx*Ny*Nz,OUTFILE);
fclose(OUTFILE);
//LeeModel.WriteDebug_TwoFluid();
PROFILE_STOP("Main");
// ****************************************************
} // Limit scope so variables that contain communicators will free before MPI_Finialize
Utilities::shutdown();
return 0;
}