469 lines
16 KiB
C++
469 lines
16 KiB
C++
/*
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* Multi-relaxation time LBM Model
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*/
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#include "models/MRTModel.h"
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#include "analysis/distance.h"
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#include "common/ReadMicroCT.h"
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ScaLBL_MRTModel::ScaLBL_MRTModel(int RANK, int NP, const Utilities::MPI& COMM):
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rank(RANK), nprocs(NP), Restart(0),timestep(0),timestepMax(0),tau(0),
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Fx(0),Fy(0),Fz(0),flux(0),din(0),dout(0),mu(0),
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Nx(0),Ny(0),Nz(0),N(0),Np(0),nprocx(0),nprocy(0),nprocz(0),BoundaryCondition(0),Lx(0),Ly(0),Lz(0),comm(COMM)
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{
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}
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ScaLBL_MRTModel::~ScaLBL_MRTModel(){
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}
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void ScaLBL_MRTModel::ReadParams(string filename){
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// read the input database
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db = std::make_shared<Database>( filename );
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domain_db = db->getDatabase( "Domain" );
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mrt_db = db->getDatabase( "MRT" );
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tau = 1.0;
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timestepMax = 100000;
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tolerance = 1.0e-8;
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Fx = Fy = 0.0;
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Fz = 1.0e-5;
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// Color Model parameters
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if (mrt_db->keyExists( "timestepMax" )){
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timestepMax = mrt_db->getScalar<int>( "timestepMax" );
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}
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if (mrt_db->keyExists( "tolerance" )){
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tolerance = mrt_db->getScalar<double>( "tolerance" );
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}
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if (mrt_db->keyExists( "tau" )){
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tau = mrt_db->getScalar<double>( "tau" );
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}
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if (mrt_db->keyExists( "F" )){
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Fx = mrt_db->getVector<double>( "F" )[0];
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Fy = mrt_db->getVector<double>( "F" )[1];
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Fz = mrt_db->getVector<double>( "F" )[2];
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}
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if (mrt_db->keyExists( "Restart" )){
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Restart = mrt_db->getScalar<bool>( "Restart" );
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}
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if (mrt_db->keyExists( "din" )){
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din = mrt_db->getScalar<double>( "din" );
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}
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if (mrt_db->keyExists( "dout" )){
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dout = mrt_db->getScalar<double>( "dout" );
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}
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if (mrt_db->keyExists( "flux" )){
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flux = mrt_db->getScalar<double>( "flux" );
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}
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// Read domain parameters
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if (mrt_db->keyExists( "BoundaryCondition" )){
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BoundaryCondition = mrt_db->getScalar<int>( "BC" );
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}
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else if (domain_db->keyExists( "BC" )){
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BoundaryCondition = domain_db->getScalar<int>( "BC" );
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}
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mu=(tau-0.5)/3.0;
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}
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void ScaLBL_MRTModel::SetDomain(){
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Dm = std::shared_ptr<Domain>(new Domain(domain_db,comm)); // full domain for analysis
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Mask = std::shared_ptr<Domain>(new Domain(domain_db,comm)); // mask domain removes immobile phases
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// domain parameters
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Nx = Dm->Nx;
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Ny = Dm->Ny;
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Nz = Dm->Nz;
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Lx = Dm->Lx;
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Ly = Dm->Ly;
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Lz = Dm->Lz;
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N = Nx*Ny*Nz;
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Distance.resize(Nx,Ny,Nz);
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Velocity_x.resize(Nx,Ny,Nz);
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Velocity_y.resize(Nx,Ny,Nz);
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Velocity_z.resize(Nx,Ny,Nz);
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for (int i=0; i<Nx*Ny*Nz; i++) Dm->id[i] = 1; // initialize this way
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//Averages = std::shared_ptr<TwoPhase> ( new TwoPhase(Dm) ); // TwoPhase analysis object
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comm.barrier();
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Dm->CommInit();
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comm.barrier();
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rank = Dm->rank();
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nprocx = Dm->nprocx();
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nprocy = Dm->nprocy();
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nprocz = Dm->nprocz();
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}
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void ScaLBL_MRTModel::ReadInput(){
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sprintf(LocalRankString,"%05d",Dm->rank());
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sprintf(LocalRankFilename,"%s%s","ID.",LocalRankString);
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sprintf(LocalRestartFile,"%s%s","Restart.",LocalRankString);
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if (domain_db->keyExists( "Filename" )){
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auto Filename = domain_db->getScalar<std::string>( "Filename" );
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Mask->Decomp(Filename);
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}
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else if (domain_db->keyExists( "GridFile" )){
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// Read the local domain data
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auto input_id = readMicroCT( *domain_db, comm );
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// Fill the halo (assuming GCW of 1)
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array<int,3> size0 = { (int) input_id.size(0), (int) input_id.size(1), (int) input_id.size(2) };
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ArraySize size1 = { (size_t) Mask->Nx, (size_t) Mask->Ny, (size_t) Mask->Nz };
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ASSERT( (int) size1[0] == size0[0]+2 && (int) size1[1] == size0[1]+2 && (int) size1[2] == size0[2]+2 );
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fillHalo<signed char> fill( comm, Mask->rank_info, size0, { 1, 1, 1 }, 0, 1 );
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Array<signed char> id_view;
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id_view.viewRaw( size1, Mask->id.data() );
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fill.copy( input_id, id_view );
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fill.fill( id_view );
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}
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else{
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Mask->ReadIDs();
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}
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// Generate the signed distance map
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// Initialize the domain and communication
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Array<char> id_solid(Nx,Ny,Nz);
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// Solve for the position of the solid phase
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for (int k=0;k<Nz;k++){
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for (int j=0;j<Ny;j++){
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for (int i=0;i<Nx;i++){
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int n = k*Nx*Ny+j*Nx+i;
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// Initialize the solid phase
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if (Mask->id[n] > 0) id_solid(i,j,k) = 1;
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else id_solid(i,j,k) = 0;
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}
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}
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}
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// Initialize the signed distance function
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for (int k=0;k<Nz;k++){
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for (int j=0;j<Ny;j++){
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for (int i=0;i<Nx;i++){
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// Initialize distance to +/- 1
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Distance(i,j,k) = 2.0*double(id_solid(i,j,k))-1.0;
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}
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}
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}
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// MeanFilter(Averages->SDs);
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if (rank==0) printf("Initialized solid phase -- Converting to Signed Distance function \n");
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CalcDist(Distance,id_solid,*Dm);
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if (rank == 0) cout << "Domain set." << endl;
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}
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void ScaLBL_MRTModel::Create(){
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/*
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* This function creates the variables needed to run a LBM
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*/
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int rank=Mask->rank();
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//.........................................................
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// Initialize communication structures in averaging domain
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for (int i=0; i<Nx*Ny*Nz; i++) Dm->id[i] = Mask->id[i];
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Mask->CommInit();
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Np=Mask->PoreCount();
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//...........................................................................
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if (rank==0) printf ("Create ScaLBL_Communicator \n");
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// Create a communicator for the device (will use optimized layout)
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// ScaLBL_Communicator ScaLBL_Comm(Mask); // original
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ScaLBL_Comm = std::shared_ptr<ScaLBL_Communicator>(new ScaLBL_Communicator(Mask));
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int Npad=(Np/16 + 2)*16;
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if (rank==0) printf ("Set up memory efficient layout \n");
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Map.resize(Nx,Ny,Nz); Map.fill(-2);
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auto neighborList= new int[18*Npad];
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Np = ScaLBL_Comm->MemoryOptimizedLayoutAA(Map,neighborList,Mask->id.data(),Np);
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comm.barrier();
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//...........................................................................
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// MAIN VARIABLES ALLOCATED HERE
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//...........................................................................
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// LBM variables
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if (rank==0) printf ("Allocating distributions \n");
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//......................device distributions.................................
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int dist_mem_size = Np*sizeof(double);
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int neighborSize=18*(Np*sizeof(int));
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//...........................................................................
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ScaLBL_AllocateDeviceMemory((void **) &NeighborList, neighborSize);
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ScaLBL_AllocateDeviceMemory((void **) &fq, 19*dist_mem_size);
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ScaLBL_AllocateDeviceMemory((void **) &Pressure, sizeof(double)*Np);
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ScaLBL_AllocateDeviceMemory((void **) &Velocity, 3*sizeof(double)*Np);
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//...........................................................................
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// Update GPU data structures
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if (rank==0) printf ("Setting up device map and neighbor list \n");
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// copy the neighbor list
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ScaLBL_CopyToDevice(NeighborList, neighborList, neighborSize);
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comm.barrier();
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}
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void ScaLBL_MRTModel::Initialize(){
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/*
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* This function initializes model
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*/
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if (rank==0) printf ("Initializing distributions \n");
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ScaLBL_D3Q19_Init(fq, Np);
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}
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void ScaLBL_MRTModel::Run(){
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double rlx_setA=1.0/tau;
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double rlx_setB = 8.f*(2.f-rlx_setA)/(8.f-rlx_setA);
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Minkowski Morphology(Mask);
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if (rank==0){
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bool WriteHeader=false;
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FILE *log_file = fopen("Permeability.csv","r");
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if (log_file != NULL)
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fclose(log_file);
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else
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WriteHeader=true;
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if (WriteHeader){
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log_file = fopen("Permeability.csv","a+");
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fprintf(log_file,"time Fx Fy Fz mu Vs As Js Xs vx vy vz k\n");
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fclose(log_file);
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}
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}
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//.......create and start timer............
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double starttime,stoptime,cputime;
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ScaLBL_DeviceBarrier(); comm.barrier();
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starttime = MPI_Wtime();
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if (rank==0) printf("Beginning AA timesteps, timestepMax = %i \n", timestepMax);
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if (rank==0) printf("********************************************************\n");
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timestep=0;
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double error = 1.0;
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double flow_rate_previous = 0.0;
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while (timestep < timestepMax && error > tolerance) {
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//************************************************************************/
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timestep++;
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ScaLBL_Comm->SendD3Q19AA(fq); //READ FROM NORMAL
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ScaLBL_D3Q19_AAodd_MRT(NeighborList, fq, ScaLBL_Comm->FirstInterior(), ScaLBL_Comm->LastInterior(), Np, rlx_setA, rlx_setB, Fx, Fy, Fz);
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ScaLBL_Comm->RecvD3Q19AA(fq); //WRITE INTO OPPOSITE
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// Set boundary conditions
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if (BoundaryCondition == 3){
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ScaLBL_Comm->D3Q19_Pressure_BC_z(NeighborList, fq, din, timestep);
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ScaLBL_Comm->D3Q19_Pressure_BC_Z(NeighborList, fq, dout, timestep);
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}
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else if (BoundaryCondition == 4){
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din = ScaLBL_Comm->D3Q19_Flux_BC_z(NeighborList, fq, flux, timestep);
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ScaLBL_Comm->D3Q19_Pressure_BC_Z(NeighborList, fq, dout, timestep);
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}
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else if (BoundaryCondition == 5){
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ScaLBL_Comm->D3Q19_Reflection_BC_z(fq);
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ScaLBL_Comm->D3Q19_Reflection_BC_Z(fq);
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}
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ScaLBL_D3Q19_AAodd_MRT(NeighborList, fq, 0, ScaLBL_Comm->LastExterior(), Np, rlx_setA, rlx_setB, Fx, Fy, Fz);
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ScaLBL_DeviceBarrier(); comm.barrier();
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timestep++;
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ScaLBL_Comm->SendD3Q19AA(fq); //READ FORM NORMAL
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ScaLBL_D3Q19_AAeven_MRT(fq, ScaLBL_Comm->FirstInterior(), ScaLBL_Comm->LastInterior(), Np, rlx_setA, rlx_setB, Fx, Fy, Fz);
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ScaLBL_Comm->RecvD3Q19AA(fq); //WRITE INTO OPPOSITE
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// Set boundary conditions
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if (BoundaryCondition == 3){
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ScaLBL_Comm->D3Q19_Pressure_BC_z(NeighborList, fq, din, timestep);
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ScaLBL_Comm->D3Q19_Pressure_BC_Z(NeighborList, fq, dout, timestep);
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}
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else if (BoundaryCondition == 4){
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din = ScaLBL_Comm->D3Q19_Flux_BC_z(NeighborList, fq, flux, timestep);
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ScaLBL_Comm->D3Q19_Pressure_BC_Z(NeighborList, fq, dout, timestep);
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}
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else if (BoundaryCondition == 5){
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ScaLBL_Comm->D3Q19_Reflection_BC_z(fq);
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ScaLBL_Comm->D3Q19_Reflection_BC_Z(fq);
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}
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ScaLBL_D3Q19_AAeven_MRT(fq, 0, ScaLBL_Comm->LastExterior(), Np, rlx_setA, rlx_setB, Fx, Fy, Fz);
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ScaLBL_DeviceBarrier(); comm.barrier();
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//************************************************************************/
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if (timestep%1000==0){
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ScaLBL_D3Q19_Momentum(fq,Velocity, Np);
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ScaLBL_DeviceBarrier(); comm.barrier();
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ScaLBL_Comm->RegularLayout(Map,&Velocity[0],Velocity_x);
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ScaLBL_Comm->RegularLayout(Map,&Velocity[Np],Velocity_y);
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ScaLBL_Comm->RegularLayout(Map,&Velocity[2*Np],Velocity_z);
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double count_loc=0;
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double count;
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double vax,vay,vaz;
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double vax_loc,vay_loc,vaz_loc;
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vax_loc = vay_loc = vaz_loc = 0.f;
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for (int k=1; k<Nz-1; k++){
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for (int j=1; j<Ny-1; j++){
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for (int i=1; i<Nx-1; i++){
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if (Distance(i,j,k) > 0){
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vax_loc += Velocity_x(i,j,k);
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vay_loc += Velocity_y(i,j,k);
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vaz_loc += Velocity_z(i,j,k);
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count_loc+=1.0;
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}
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}
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}
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}
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vax=Dm->Comm.sumReduce( vax_loc);
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vay=Dm->Comm.sumReduce( vay_loc);
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vaz=Dm->Comm.sumReduce( vaz_loc);
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count=Dm->Comm.sumReduce( count_loc);
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vax /= count;
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vay /= count;
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vaz /= count;
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double force_mag = sqrt(Fx*Fx+Fy*Fy+Fz*Fz);
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double dir_x = Fx/force_mag;
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double dir_y = Fy/force_mag;
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double dir_z = Fz/force_mag;
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if (force_mag == 0.0){
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// default to z direction
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dir_x = 0.0;
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dir_y = 0.0;
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dir_z = 1.0;
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force_mag = 1.0;
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}
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double flow_rate = (vax*dir_x + vay*dir_y + vaz*dir_z);
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error = fabs(flow_rate - flow_rate_previous) / fabs(flow_rate);
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flow_rate_previous = flow_rate;
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//if (rank==0) printf("Computing Minkowski functionals \n");
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Morphology.ComputeScalar(Distance,0.f);
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//Morphology.PrintAll();
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double mu = (tau-0.5)/3.f;
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double Vs = Morphology.V();
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double As = Morphology.A();
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double Hs = Morphology.H();
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double Xs = Morphology.X();
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Vs=Dm->Comm.sumReduce( Vs);
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As=Dm->Comm.sumReduce( As);
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Hs=Dm->Comm.sumReduce( Hs);
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Xs=Dm->Comm.sumReduce( Xs);
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double h = Dm->voxel_length;
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double absperm = h*h*mu*Mask->Porosity()*flow_rate / force_mag;
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if (rank==0) {
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printf(" %f\n",absperm);
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FILE * log_file = fopen("Permeability.csv","a");
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fprintf(log_file,"%i %.8g %.8g %.8g %.8g %.8g %.8g %.8g %.8g %.8g %.8g %.8g %.8g\n",timestep, Fx, Fy, Fz, mu,
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h*h*h*Vs,h*h*As,h*Hs,Xs,vax,vay,vaz, absperm);
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fclose(log_file);
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}
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}
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}
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//************************************************************************/
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stoptime = MPI_Wtime();
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if (rank==0) printf("-------------------------------------------------------------------\n");
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// Compute the walltime per timestep
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cputime = (stoptime - starttime)/timestep;
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// Performance obtained from each node
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double MLUPS = double(Np)/cputime/1000000;
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if (rank==0) printf("********************************************************\n");
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if (rank==0) printf("CPU time = %f \n", cputime);
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if (rank==0) printf("Lattice update rate (per core)= %f MLUPS \n", MLUPS);
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MLUPS *= nprocs;
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if (rank==0) printf("Lattice update rate (total)= %f MLUPS \n", MLUPS);
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if (rank==0) printf("********************************************************\n");
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}
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void ScaLBL_MRTModel::VelocityField(){
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/* Minkowski Morphology(Mask);
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int SIZE=Np*sizeof(double);
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ScaLBL_D3Q19_Momentum(fq,Velocity, Np);
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ScaLBL_DeviceBarrier(); comm.barrier();
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ScaLBL_CopyToHost(&VELOCITY[0],&Velocity[0],3*SIZE);
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memcpy(Morphology.SDn.data(), Distance.data(), Nx*Ny*Nz*sizeof(double));
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Morphology.Initialize();
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Morphology.UpdateMeshValues();
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Morphology.ComputeLocal();
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Morphology.Reduce();
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double count_loc=0;
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double count;
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double vax,vay,vaz;
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double vax_loc,vay_loc,vaz_loc;
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vax_loc = vay_loc = vaz_loc = 0.f;
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for (int n=0; n<ScaLBL_Comm->LastExterior(); n++){
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vax_loc += VELOCITY[n];
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vay_loc += VELOCITY[Np+n];
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vaz_loc += VELOCITY[2*Np+n];
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count_loc+=1.0;
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}
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for (int n=ScaLBL_Comm->FirstInterior(); n<ScaLBL_Comm->LastInterior(); n++){
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vax_loc += VELOCITY[n];
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vay_loc += VELOCITY[Np+n];
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vaz_loc += VELOCITY[2*Np+n];
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count_loc+=1.0;
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}
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MPI_Allreduce(&vax_loc,&vax,1,MPI_DOUBLE,MPI_SUM,Mask->Comm);
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MPI_Allreduce(&vay_loc,&vay,1,MPI_DOUBLE,MPI_SUM,Mask->Comm);
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MPI_Allreduce(&vaz_loc,&vaz,1,MPI_DOUBLE,MPI_SUM,Mask->Comm);
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MPI_Allreduce(&count_loc,&count,1,MPI_DOUBLE,MPI_SUM,Mask->Comm);
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vax /= count;
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vay /= count;
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vaz /= count;
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double mu = (tau-0.5)/3.f;
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if (rank==0) printf("Fx Fy Fz mu Vs As Js Xs vx vy vz\n");
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if (rank==0) printf("%.8g %.8g %.8g %.8g %.8g %.8g %.8g %.8g %.8g %.8g %.8g\n",Fx, Fy, Fz, mu,
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Morphology.V(),Morphology.A(),Morphology.J(),Morphology.X(),vax,vay,vaz);
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*/
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std::vector<IO::MeshDataStruct> visData;
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fillHalo<double> fillData(Dm->Comm,Dm->rank_info,{Dm->Nx-2,Dm->Ny-2,Dm->Nz-2},{1,1,1},0,1);
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auto VxVar = std::make_shared<IO::Variable>();
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auto VyVar = std::make_shared<IO::Variable>();
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auto VzVar = std::make_shared<IO::Variable>();
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auto SignDistVar = std::make_shared<IO::Variable>();
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IO::initialize("","silo","false");
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// Create the MeshDataStruct
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visData.resize(1);
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visData[0].meshName = "domain";
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visData[0].mesh = std::make_shared<IO::DomainMesh>( Dm->rank_info,Dm->Nx-2,Dm->Ny-2,Dm->Nz-2,Dm->Lx,Dm->Ly,Dm->Lz );
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SignDistVar->name = "SignDist";
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SignDistVar->type = IO::VariableType::VolumeVariable;
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SignDistVar->dim = 1;
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SignDistVar->data.resize(Dm->Nx-2,Dm->Ny-2,Dm->Nz-2);
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visData[0].vars.push_back(SignDistVar);
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VxVar->name = "Velocity_x";
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VxVar->type = IO::VariableType::VolumeVariable;
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VxVar->dim = 1;
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VxVar->data.resize(Dm->Nx-2,Dm->Ny-2,Dm->Nz-2);
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visData[0].vars.push_back(VxVar);
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VyVar->name = "Velocity_y";
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VyVar->type = IO::VariableType::VolumeVariable;
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VyVar->dim = 1;
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VyVar->data.resize(Dm->Nx-2,Dm->Ny-2,Dm->Nz-2);
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visData[0].vars.push_back(VyVar);
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VzVar->name = "Velocity_z";
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VzVar->type = IO::VariableType::VolumeVariable;
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VzVar->dim = 1;
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VzVar->data.resize(Dm->Nx-2,Dm->Ny-2,Dm->Nz-2);
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visData[0].vars.push_back(VzVar);
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|
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Array<double>& SignData = visData[0].vars[0]->data;
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Array<double>& VelxData = visData[0].vars[1]->data;
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Array<double>& VelyData = visData[0].vars[2]->data;
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Array<double>& VelzData = visData[0].vars[3]->data;
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|
|
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ASSERT(visData[0].vars[0]->name=="SignDist");
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|
ASSERT(visData[0].vars[1]->name=="Velocity_x");
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ASSERT(visData[0].vars[2]->name=="Velocity_y");
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ASSERT(visData[0].vars[3]->name=="Velocity_z");
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|
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fillData.copy(Distance,SignData);
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fillData.copy(Velocity_x,VelxData);
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fillData.copy(Velocity_y,VelyData);
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fillData.copy(Velocity_z,VelzData);
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IO::writeData( timestep, visData, Dm->Comm );
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}
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