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clean up the greyscaleColor code; GPU only; to be built and tested

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This commit is contained in:
Rex Zhe Li
2021-03-30 06:51:23 -04:00
parent 02d2e514ed
commit ca2595e99c
4 changed files with 310 additions and 320 deletions
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445
models/GreyscaleColorModel.cpp
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@@ -17,7 +17,7 @@ void DeleteArray( const TYPE *p )
ScaLBL_GreyscaleColorModel::ScaLBL_GreyscaleColorModel(int RANK, int NP, const Utilities::MPI& COMM):
rank(RANK), nprocs(NP), Restart(0),timestep(0),timestepMax(0),tauA(0),tauB(0),tauA_eff(0),tauB_eff(0),rhoA(0),rhoB(0),alpha(0),beta(0),
Fx(0),Fy(0),Fz(0),flux(0),din(0),dout(0),inletA(0),inletB(0),outletA(0),outletB(0),GreyPorosity(0),RecoloringOff(0),W(0),
Fx(0),Fy(0),Fz(0),flux(0),din(0),dout(0),inletA(0),inletB(0),outletA(0),outletB(0),GreyPorosity(0),RecoloringOff(0),
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)
{
REVERSE_FLOW_DIRECTION = false;
@@ -44,7 +44,7 @@ void ScaLBL_GreyscaleColorModel::ReadParams(string filename){
din=dout=1.0;
flux=0.0;
RecoloringOff = false;
W=1.0;
//W=1.0;
// Color Model parameters
if (greyscaleColor_db->keyExists( "timestepMax" )){
@@ -90,9 +90,6 @@ void ScaLBL_GreyscaleColorModel::ReadParams(string filename){
if (greyscaleColor_db->keyExists( "RecoloringOff" )){
RecoloringOff = greyscaleColor_db->getScalar<bool>( "RecoloringOff" );
}
if (greyscaleColor_db->keyExists( "W" )){
W = greyscaleColor_db->getScalar<double>( "W" );
}
inletA=1.f;
inletB=0.f;
outletA=0.f;
@@ -300,19 +297,18 @@ void ScaLBL_GreyscaleColorModel::AssignComponentLabels()
delete [] phase;
}
void ScaLBL_GreyscaleColorModel::AssignGreySolidLabels()//Model-4
void ScaLBL_GreyscaleColorModel::AssignGreySolidLabels()//apply capillary penalty wetting strength W
{
// ONLY initialize grey nodes
// Key input parameters:
// 1. GreySolidLabels
// labels for grey nodes
// 2. GreySolidAffinity
// affinity ranges [-1,1]
// oil-wet > 0
// water-wet < 0
// neutral = 0
double *SolidPotential_host = new double [Nx*Ny*Nz];
double *GreySolidGrad_host = new double [3*Np];
// ranges [-1,1]
// water-wet > 0
// oil-wet < 0
// neutral = 0 (i.e. no penalty)
double *GreySolidW_host = new double [Np];
size_t NLABELS=0;
signed char VALUE=0;
@@ -334,117 +330,19 @@ void ScaLBL_GreyscaleColorModel::AssignGreySolidLabels()//Model-4
AFFINITY=0.f;//all nodes except the specified grey nodes have grey-solid affinity = 0.0
// Assign the affinity from the paired list
for (unsigned int idx=0; idx < NLABELS; idx++){
//printf("idx=%i, value=%i, %i, \n",idx, VALUE,LabelList[idx]);
if (VALUE == LabelList[idx]){
AFFINITY=AffinityList[idx];
idx = NLABELS;
//Mask->id[n] = 0; // set mask to zero since this is an immobile component
}
}
SolidPotential_host[n] = AFFINITY;
}
}
}
// Calculate grey-solid color-gradient
double *Dst;
Dst = new double [3*3*3];
for (int kk=0; kk<3; kk++){
for (int jj=0; jj<3; jj++){
for (int ii=0; ii<3; ii++){
int index = kk*9+jj*3+ii;
Dst[index] = sqrt(double(ii-1)*double(ii-1) + double(jj-1)*double(jj-1)+ double(kk-1)*double(kk-1));
}
}
}
double w_face = 1.f;
double w_edge = 0.5;
double w_corner = 0.f;
//local
Dst[13] = 0.f;
//faces
Dst[4] = w_face;
Dst[10] = w_face;
Dst[12] = w_face;
Dst[14] = w_face;
Dst[16] = w_face;
Dst[22] = w_face;
// corners
Dst[0] = w_corner;
Dst[2] = w_corner;
Dst[6] = w_corner;
Dst[8] = w_corner;
Dst[18] = w_corner;
Dst[20] = w_corner;
Dst[24] = w_corner;
Dst[26] = w_corner;
// edges
Dst[1] = w_edge;
Dst[3] = w_edge;
Dst[5] = w_edge;
Dst[7] = w_edge;
Dst[9] = w_edge;
Dst[11] = w_edge;
Dst[15] = w_edge;
Dst[17] = w_edge;
Dst[19] = w_edge;
Dst[21] = w_edge;
Dst[23] = w_edge;
Dst[25] = w_edge;
for (int k=1; k<Nz-1; k++){
for (int j=1; j<Ny-1; j++){
for (int i=1; i<Nx-1; i++){
int idx=Map(i,j,k);
int idx = Map(i,j,k);
if (!(idx < 0)){
double phi_x = 0.f;
double phi_y = 0.f;
double phi_z = 0.f;
for (int kk=0; kk<3; kk++){
for (int jj=0; jj<3; jj++){
for (int ii=0; ii<3; ii++){
int index = kk*9+jj*3+ii;
double weight= Dst[index];
int idi=i+ii-1;
int idj=j+jj-1;
int idk=k+kk-1;
if (idi < 0) idi=0;
if (idj < 0) idj=0;
if (idk < 0) idk=0;
if (!(idi < Nx)) idi=Nx-1;
if (!(idj < Ny)) idj=Ny-1;
if (!(idk < Nz)) idk=Nz-1;
int nn = idk*Nx*Ny + idj*Nx + idi;
double vec_x = double(ii-1);
double vec_y = double(jj-1);
double vec_z = double(kk-1);
double GWNS=SolidPotential_host[nn];
phi_x += GWNS*weight*vec_x;
phi_y += GWNS*weight*vec_y;
phi_z += GWNS*weight*vec_z;
}
}
}
if (Averages->SDs(i,j,k)<2.0){
GreySolidGrad_host[idx+0*Np] = phi_x;
GreySolidGrad_host[idx+1*Np] = phi_y;
GreySolidGrad_host[idx+2*Np] = phi_z;
}
else{
GreySolidGrad_host[idx+0*Np] = 0.0;
GreySolidGrad_host[idx+1*Np] = 0.0;
GreySolidGrad_host[idx+2*Np] = 0.0;
}
}
GreySolidW[idx] = AFFINITY;
}
}
}
}
if (rank==0){
printf("Number of Grey-solid labels: %lu \n",NLABELS);
for (unsigned int idx=0; idx<NLABELS; idx++){
@@ -452,14 +350,13 @@ void ScaLBL_GreyscaleColorModel::AssignGreySolidLabels()//Model-4
AFFINITY=AffinityList[idx];
printf(" grey-solid label=%d, grey-solid affinity=%f\n",VALUE,AFFINITY);
}
printf("NOTE: grey-solid affinity>0: water-wet || grey-solid affinity<0: oil-wet \n");
}
ScaLBL_CopyToDevice(GreySolidGrad, GreySolidGrad_host, 3*Np*sizeof(double));
ScaLBL_CopyToDevice(GreySolidW, GreySolidW_host, Np*sizeof(double));
ScaLBL_Comm->Barrier();
delete [] SolidPotential_host;
delete [] GreySolidGrad_host;
delete [] Dst;
delete [] GreySolidW_host;
}
////----------------------------------------------------------------------------------------------------------//
@@ -585,70 +482,70 @@ void ScaLBL_GreyscaleColorModel::AssignGreyPoroPermLabels()
delete [] Permeability;
}
void ScaLBL_GreyscaleColorModel::AssignGreyscalePotential()
{
double *psi;//greyscale potential
psi = new double[N];
size_t NLABELS=0;
signed char VALUE=0;
double AFFINITY=0.f;
auto LabelList = greyscaleColor_db->getVector<int>( "ComponentLabels" );
auto AffinityList = greyscaleColor_db->getVector<double>( "ComponentAffinity" );
NLABELS=LabelList.size();
//first, copy over normal phase field
for (int k=0;k<Nz;k++){
for (int j=0;j<Ny;j++){
for (int i=0;i<Nx;i++){
int n = k*Nx*Ny+j*Nx+i;
VALUE=id[n];
// Assign the affinity from the paired list
for (unsigned int idx=0; idx < NLABELS; idx++){
//printf("idx=%i, value=%i, %i, \n",idx, VALUE,LabelList[idx]);
if (VALUE == LabelList[idx]){
AFFINITY=AffinityList[idx];
idx = NLABELS;
}
}
// fluid labels are reserved
if (VALUE == 1) AFFINITY=1.0;
else if (VALUE == 2) AFFINITY=-1.0;
psi[n] = AFFINITY;
}
}
}
//second, scale the phase field for grey nodes
double Cap_Penalty=1.f;
auto GreyLabelList = greyscaleColor_db->getVector<int>( "GreySolidLabels" );
auto PermeabilityList = greyscaleColor_db->getVector<double>( "PermeabilityList" );
NLABELS=GreyLabelList.size();
for (int k=0;k<Nz;k++){
for (int j=0;j<Ny;j++){
for (int i=0;i<Nx;i++){
int n = k*Nx*Ny+j*Nx+i;
VALUE=id[n];
Cap_Penalty=1.f;
// Assign the affinity from the paired list
for (unsigned int idx=0; idx < NLABELS; idx++){
if (VALUE == GreyLabelList[idx]){
Cap_Penalty=alpha*W/sqrt(PermeabilityList[idx]/Dm->voxel_length/Dm->voxel_length);
idx = NLABELS;
}
}
//update greyscale potential
psi[n] = psi[n]*Cap_Penalty;
}
}
}
ScaLBL_CopyToDevice(Psi, psi, N*sizeof(double));
ScaLBL_Comm->Barrier();
delete [] psi;
}
//void ScaLBL_GreyscaleColorModel::AssignGreyscalePotential()
//{
// double *psi;//greyscale potential
// psi = new double[N];
//
// size_t NLABELS=0;
// signed char VALUE=0;
// double AFFINITY=0.f;
//
// auto LabelList = greyscaleColor_db->getVector<int>( "ComponentLabels" );
// auto AffinityList = greyscaleColor_db->getVector<double>( "ComponentAffinity" );
// NLABELS=LabelList.size();
//
// //first, copy over normal phase field
// for (int k=0;k<Nz;k++){
// for (int j=0;j<Ny;j++){
// for (int i=0;i<Nx;i++){
// int n = k*Nx*Ny+j*Nx+i;
// VALUE=id[n];
// // Assign the affinity from the paired list
// for (unsigned int idx=0; idx < NLABELS; idx++){
// //printf("idx=%i, value=%i, %i, \n",idx, VALUE,LabelList[idx]);
// if (VALUE == LabelList[idx]){
// AFFINITY=AffinityList[idx];
// idx = NLABELS;
// }
// }
// // fluid labels are reserved
// if (VALUE == 1) AFFINITY=1.0;
// else if (VALUE == 2) AFFINITY=-1.0;
// psi[n] = AFFINITY;
// }
// }
// }
//
// //second, scale the phase field for grey nodes
// double Cap_Penalty=1.f;
// auto GreyLabelList = greyscaleColor_db->getVector<int>( "GreySolidLabels" );
// auto PermeabilityList = greyscaleColor_db->getVector<double>( "PermeabilityList" );
// NLABELS=GreyLabelList.size();
//
// for (int k=0;k<Nz;k++){
// for (int j=0;j<Ny;j++){
// for (int i=0;i<Nx;i++){
// int n = k*Nx*Ny+j*Nx+i;
// VALUE=id[n];
// Cap_Penalty=1.f;
// // Assign the affinity from the paired list
// for (unsigned int idx=0; idx < NLABELS; idx++){
// if (VALUE == GreyLabelList[idx]){
// Cap_Penalty=alpha*W/sqrt(PermeabilityList[idx]/Dm->voxel_length/Dm->voxel_length);
// idx = NLABELS;
// }
// }
// //update greyscale potential
// psi[n] = psi[n]*Cap_Penalty;
// }
// }
// }
//
// ScaLBL_CopyToDevice(Psi, psi, N*sizeof(double));
// ScaLBL_Comm->Barrier();
// delete [] psi;
//}
void ScaLBL_GreyscaleColorModel::Create(){
/*
@@ -695,12 +592,13 @@ void ScaLBL_GreyscaleColorModel::Create(){
ScaLBL_AllocateDeviceMemory((void **) &Bq, 7*dist_mem_size);
ScaLBL_AllocateDeviceMemory((void **) &Den, 2*dist_mem_size);
ScaLBL_AllocateDeviceMemory((void **) &Phi, sizeof(double)*Nx*Ny*Nz);
ScaLBL_AllocateDeviceMemory((void **) &Psi, sizeof(double)*Nx*Ny*Nz);//greyscale potential
//ScaLBL_AllocateDeviceMemory((void **) &Psi, sizeof(double)*Nx*Ny*Nz);//greyscale potential
ScaLBL_AllocateDeviceMemory((void **) &Pressure, sizeof(double)*Np);
ScaLBL_AllocateDeviceMemory((void **) &Velocity, 3*sizeof(double)*Np);
//ScaLBL_AllocateDeviceMemory((void **) &ColorGrad, 3*sizeof(double)*Np);
//ScaLBL_AllocateDeviceMemory((void **) &GreySolidPhi, sizeof(double)*Nx*Ny*Nz);
ScaLBL_AllocateDeviceMemory((void **) &GreySolidGrad, 3*sizeof(double)*Np);
//ScaLBL_AllocateDeviceMemory((void **) &GreySolidGrad, 3*sizeof(double)*Np);
ScaLBL_AllocateDeviceMemory((void **) &GreySolidW, sizeof(double)*Np);
ScaLBL_AllocateDeviceMemory((void **) &Porosity_dvc, sizeof(double)*Np);
ScaLBL_AllocateDeviceMemory((void **) &Permeability_dvc, sizeof(double)*Np);
//...........................................................................
@@ -744,7 +642,7 @@ void ScaLBL_GreyscaleColorModel::Create(){
AssignComponentLabels();//do open/black/grey nodes initialization
AssignGreySolidLabels();
AssignGreyPoroPermLabels();
AssignGreyscalePotential();
//AssignGreyscalePotential();
Averages->SetParams(rhoA,rhoB,tauA,tauB,Fx,Fy,Fz,alpha,beta,GreyPorosity);
ScaLBL_Comm->RegularLayout(Map,Porosity_dvc,Averages->Porosity);//porosity doesn't change over time
}
@@ -1025,9 +923,9 @@ void ScaLBL_GreyscaleColorModel::Run(){
ScaLBL_Comm_Regular->SendHalo(Phi);
ScaLBL_Comm_Regular_2->SendHalo(Psi);
//Model-1&4 with capillary pressure penalty for grey nodes
ScaLBL_D3Q19_AAodd_GreyscaleColor_CP(NeighborList, dvcMap, fq, Aq, Bq, Den, Phi, Psi, GreySolidGrad,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
ScaLBL_D3Q19_AAodd_GreyscaleColor_CP(NeighborList, dvcMap, fq, Aq, Bq, Den, Phi, GreySolidW,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
rhoA, rhoB, tauA, tauB,tauA_eff, tauB_eff,
alpha, beta, Fx, Fy, Fz, RecoloringOff, W, Nx, Nx*Ny, ScaLBL_Comm->FirstInterior(), ScaLBL_Comm->LastInterior(), Np);
alpha, beta, Fx, Fy, Fz, RecoloringOff, Nx, Nx*Ny, ScaLBL_Comm->FirstInterior(), ScaLBL_Comm->LastInterior(), Np);
//Model-1&4
//ScaLBL_D3Q19_AAodd_GreyscaleColor(NeighborList, dvcMap, fq, Aq, Bq, Den, Phi,GreySolidGrad,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
// rhoA, rhoB, tauA, tauB,tauA_eff, tauB_eff,
@@ -1055,9 +953,9 @@ void ScaLBL_GreyscaleColorModel::Run(){
}
//Model-1&4 with capillary pressure penalty for grey nodes
ScaLBL_D3Q19_AAodd_GreyscaleColor_CP(NeighborList, dvcMap, fq, Aq, Bq, Den, Phi, Psi, GreySolidGrad,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
ScaLBL_D3Q19_AAodd_GreyscaleColor_CP(NeighborList, dvcMap, fq, Aq, Bq, Den, Phi, GreySolidW,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
rhoA, rhoB, tauA, tauB,tauA_eff, tauB_eff,
alpha, beta, Fx, Fy, Fz, RecoloringOff, W, Nx, Nx*Ny, 0, ScaLBL_Comm->LastExterior(), Np);
alpha, beta, Fx, Fy, Fz, RecoloringOff, Nx, Nx*Ny, 0, ScaLBL_Comm->LastExterior(), Np);
//Model-1&4
//ScaLBL_D3Q19_AAodd_GreyscaleColor(NeighborList, dvcMap, fq, Aq, Bq, Den, Phi,GreySolidGrad,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
// rhoA, rhoB, tauA, tauB,tauA_eff, tauB_eff,
@@ -1089,9 +987,9 @@ void ScaLBL_GreyscaleColorModel::Run(){
ScaLBL_Comm_Regular->SendHalo(Phi);
ScaLBL_Comm_Regular_2->SendHalo(Psi);
//Model-1&4 with capillary pressure penalty for grey nodes
ScaLBL_D3Q19_AAeven_GreyscaleColor_CP(dvcMap, fq, Aq, Bq, Den, Phi, Psi, GreySolidGrad,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
ScaLBL_D3Q19_AAeven_GreyscaleColor_CP(dvcMap, fq, Aq, Bq, Den, Phi, GreySolidW,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
rhoA, rhoB, tauA, tauB,tauA_eff, tauB_eff,
alpha, beta, Fx, Fy, Fz, RecoloringOff, W, Nx, Nx*Ny, ScaLBL_Comm->FirstInterior(), ScaLBL_Comm->LastInterior(), Np);
alpha, beta, Fx, Fy, Fz, RecoloringOff, Nx, Nx*Ny, ScaLBL_Comm->FirstInterior(), ScaLBL_Comm->LastInterior(), Np);
//Model-1&4
//ScaLBL_D3Q19_AAeven_GreyscaleColor(dvcMap, fq, Aq, Bq, Den, Phi,GreySolidGrad,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
// rhoA, rhoB, tauA, tauB,tauA_eff, tauB_eff,
@@ -1119,9 +1017,9 @@ void ScaLBL_GreyscaleColorModel::Run(){
}
//Model-1&4 with capillary pressure penalty for grey nodes
ScaLBL_D3Q19_AAeven_GreyscaleColor_CP(dvcMap, fq, Aq, Bq, Den, Phi, Psi, GreySolidGrad,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
ScaLBL_D3Q19_AAeven_GreyscaleColor_CP(dvcMap, fq, Aq, Bq, Den, Phi, GreySolidW,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
rhoA, rhoB, tauA, tauB,tauA_eff, tauB_eff,
alpha, beta, Fx, Fy, Fz, RecoloringOff, W, Nx, Nx*Ny, 0, ScaLBL_Comm->LastExterior(), Np);
alpha, beta, Fx, Fy, Fz, RecoloringOff, Nx, Nx*Ny, 0, ScaLBL_Comm->LastExterior(), Np);
//Model-1&4
//ScaLBL_D3Q19_AAeven_GreyscaleColor(dvcMap, fq, Aq, Bq, Den, Phi,GreySolidGrad,Porosity_dvc,Permeability_dvc,Velocity,Pressure,
// rhoA, rhoB, tauA, tauB,tauA_eff, tauB_eff,
@@ -2093,6 +1991,169 @@ void ScaLBL_GreyscaleColorModel::WriteDebug(){
// delete [] Dst;
//}
//void ScaLBL_GreyscaleColorModel::AssignGreySolidLabels()//Model-4
//{
// // ONLY initialize grey nodes
// // Key input parameters:
// // 1. GreySolidLabels
// // labels for grey nodes
// // 2. GreySolidAffinity
// // affinity ranges [-1,1]
// // oil-wet > 0
// // water-wet < 0
// // neutral = 0
// double *SolidPotential_host = new double [Nx*Ny*Nz];
// double *GreySolidGrad_host = new double [3*Np];
//
// size_t NLABELS=0;
// signed char VALUE=0;
// double AFFINITY=0.f;
//
// auto LabelList = greyscaleColor_db->getVector<int>( "GreySolidLabels" );
// auto AffinityList = greyscaleColor_db->getVector<double>( "GreySolidAffinity" );
//
// NLABELS=LabelList.size();
// if (NLABELS != AffinityList.size()){
// ERROR("Error: GreySolidLabels and GreySolidAffinity must be the same length! \n");
// }
//
// for (int k=0;k<Nz;k++){
// for (int j=0;j<Ny;j++){
// for (int i=0;i<Nx;i++){
// int n = k*Nx*Ny+j*Nx+i;
// VALUE=id[n];
// AFFINITY=0.f;//all nodes except the specified grey nodes have grey-solid affinity = 0.0
// // Assign the affinity from the paired list
// for (unsigned int idx=0; idx < NLABELS; idx++){
// //printf("idx=%i, value=%i, %i, \n",idx, VALUE,LabelList[idx]);
// if (VALUE == LabelList[idx]){
// AFFINITY=AffinityList[idx];
// idx = NLABELS;
// //Mask->id[n] = 0; // set mask to zero since this is an immobile component
// }
// }
// SolidPotential_host[n] = AFFINITY;
// }
// }
// }
//
// // Calculate grey-solid color-gradient
// double *Dst;
// Dst = new double [3*3*3];
// for (int kk=0; kk<3; kk++){
// for (int jj=0; jj<3; jj++){
// for (int ii=0; ii<3; ii++){
// int index = kk*9+jj*3+ii;
// Dst[index] = sqrt(double(ii-1)*double(ii-1) + double(jj-1)*double(jj-1)+ double(kk-1)*double(kk-1));
// }
// }
// }
// double w_face = 1.f;
// double w_edge = 0.5;
// double w_corner = 0.f;
// //local
// Dst[13] = 0.f;
// //faces
// Dst[4] = w_face;
// Dst[10] = w_face;
// Dst[12] = w_face;
// Dst[14] = w_face;
// Dst[16] = w_face;
// Dst[22] = w_face;
// // corners
// Dst[0] = w_corner;
// Dst[2] = w_corner;
// Dst[6] = w_corner;
// Dst[8] = w_corner;
// Dst[18] = w_corner;
// Dst[20] = w_corner;
// Dst[24] = w_corner;
// Dst[26] = w_corner;
// // edges
// Dst[1] = w_edge;
// Dst[3] = w_edge;
// Dst[5] = w_edge;
// Dst[7] = w_edge;
// Dst[9] = w_edge;
// Dst[11] = w_edge;
// Dst[15] = w_edge;
// Dst[17] = w_edge;
// Dst[19] = w_edge;
// Dst[21] = w_edge;
// Dst[23] = w_edge;
// Dst[25] = w_edge;
//
// for (int k=1; k<Nz-1; k++){
// for (int j=1; j<Ny-1; j++){
// for (int i=1; i<Nx-1; i++){
// int idx=Map(i,j,k);
// if (!(idx < 0)){
// double phi_x = 0.f;
// double phi_y = 0.f;
// double phi_z = 0.f;
// for (int kk=0; kk<3; kk++){
// for (int jj=0; jj<3; jj++){
// for (int ii=0; ii<3; ii++){
//
// int index = kk*9+jj*3+ii;
// double weight= Dst[index];
//
// int idi=i+ii-1;
// int idj=j+jj-1;
// int idk=k+kk-1;
//
// if (idi < 0) idi=0;
// if (idj < 0) idj=0;
// if (idk < 0) idk=0;
// if (!(idi < Nx)) idi=Nx-1;
// if (!(idj < Ny)) idj=Ny-1;
// if (!(idk < Nz)) idk=Nz-1;
//
// int nn = idk*Nx*Ny + idj*Nx + idi;
// double vec_x = double(ii-1);
// double vec_y = double(jj-1);
// double vec_z = double(kk-1);
// double GWNS=SolidPotential_host[nn];
// phi_x += GWNS*weight*vec_x;
// phi_y += GWNS*weight*vec_y;
// phi_z += GWNS*weight*vec_z;
// }
// }
// }
// if (Averages->SDs(i,j,k)<2.0){
// GreySolidGrad_host[idx+0*Np] = phi_x;
// GreySolidGrad_host[idx+1*Np] = phi_y;
// GreySolidGrad_host[idx+2*Np] = phi_z;
// }
// else{
// GreySolidGrad_host[idx+0*Np] = 0.0;
// GreySolidGrad_host[idx+1*Np] = 0.0;
// GreySolidGrad_host[idx+2*Np] = 0.0;
// }
// }
// }
// }
// }
//
//
// if (rank==0){
// printf("Number of Grey-solid labels: %lu \n",NLABELS);
// for (unsigned int idx=0; idx<NLABELS; idx++){
// VALUE=LabelList[idx];
// AFFINITY=AffinityList[idx];
// printf(" grey-solid label=%d, grey-solid affinity=%f\n",VALUE,AFFINITY);
// }
// }
//
//
// ScaLBL_CopyToDevice(GreySolidGrad, GreySolidGrad_host, 3*Np*sizeof(double));
// ScaLBL_Comm->Barrier();
// delete [] SolidPotential_host;
// delete [] GreySolidGrad_host;
// delete [] Dst;
//}
//--------- This is another old version of calculating greyscale-solid color-gradient modification-------//
// **not working effectively, to be deprecated
//void ScaLBL_GreyscaleColorModel::AssignGreySolidLabels()