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model_kernel.inc
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/**
* Copyright 2019 United Kingdom Research and Innovation
*
* Authors: See AUTHORS
*
* Contact: [[email protected] and/or [email protected]]
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice
* this list of conditions and the following disclaimer in the documentation
* and or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* ANDANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*! @brief Define kernel functions related to discrete velocity model
* @author Jianping Meng
* @details Define kernel functions for calculating the equilibrium functions,
* the relaxation time, body force term, and macroscopic variables.
*/
#ifndef MODEL_KERNEL_INC
#define MODEL_KERNEL_INC
#include "ops_lib_core.h"
#ifdef OPS_MPI
#include "ops_mpi_core.h"
#endif
#include "type.h"
#include "model.h"
#include "flowfield_host_device.h"
#include "model_host_device.h"
/*!
* We assume that the layout of MacroVars is rho, u, v, w, T, ...
* In the macroVars, all variables are conserved, i.e., with density.
* @todo how to deal with overflow in a kernel function? in particular, GPU
*/
#ifdef OPS_2D
void KerCalcDensity(ACC<Real>& Rho, const ACC<Real>& f,
const ACC<int>& nodeType, const int* lattIdx) {
#ifdef OPS_2D
VertexType vt = (VertexType)nodeType(0, 0);
if (vt != VertexType::ImmersedSolid) {
Real rho{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
rho += f(xiIdx, 0, 0);
}
#ifdef CPU
if (isnan(rho) || rho <= 0 || isinf(rho)) {
ops_printf(
"Error! Density %f becomes invalid！Something "
"wrong...",
rho);
assert(!(isnan(rho) || rho <= 0 || isinf(rho)));
}
#endif
Rho(0, 0) = rho;
}
#endif // OPS_2D
}
void KerCalcU(ACC<Real>& U, const ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& Rho, const int* lattIdx) {
#ifdef OPS_2D
VertexType vt = (VertexType)nodeType(0, 0);
if (vt != VertexType::ImmersedSolid) {
Real u{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
u += CS * XI[xiIdx * LATTDIM] * f(xiIdx, 0, 0);
}
u /= Rho(0, 0);
#ifdef CPU
if (isnan(u) || isinf(u)) {
ops_printf(
"Error! Velocity U=%f becomes invalid! "
"Maybe something wrong...\n",
u);
assert(!(isnan(u) || isinf(u)));
}
#endif
U(0, 0) = u;
}
#endif // OPS_2D
}
void KerCalcV(ACC<Real>& V, const ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& Rho, const int* lattIdx) {
#ifdef OPS_2D
VertexType vt = (VertexType)nodeType(0, 0);
if (vt != VertexType::ImmersedSolid) {
Real v{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
v += CS * XI[xiIdx * LATTDIM + 1] * f(xiIdx, 0, 0);
}
v /= Rho(0, 0);
#ifdef CPU
if (isnan(v) || isinf(v)) {
ops_printf(
"Error! Velocity V=%f becomes invalid! "
"Maybe something wrong...\n",
v);
assert(!(isnan(v) || isinf(v)));
}
#endif
V(0, 0) = v;
}
#endif // OPS_2D
}
void KerCalcUForce(ACC<Real>& U, const ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& coordinates, const ACC<Real>& acceleration,
const ACC<Real>& Rho, const Real* dt, const int* lattIdx) {
#ifdef OPS_2D
const Real x{coordinates(0, 0, 0)};
const Real y{coordinates(1, 0, 0)};
VertexType vt = (VertexType)nodeType(0, 0);
if (vt != VertexType::ImmersedSolid) {
Real u{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
u += CS * XI[xiIdx * LATTDIM] * f(xiIdx, 0, 0);
}
u /= Rho(0, 0);
if (VertexType::Fluid == vt || VertexType::MDPeriodic == vt) {
u += ((*dt) * acceleration(0, 0, 0) / 2);
}
#ifdef CPU
if (isnan(u) || isinf(u)) {
ops_printf(
"Error! Velocity U=%f becomes invalid! Maybe something wrong "
"at x=%f y=%f\n",
u, x, y);
assert(!(isnan(u) || isinf(u)));
}
#endif
U(0, 0) = u;
}
#endif // OPS_2D
}
void KerCalcVForce(ACC<Real>& V, const ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& coordinates, const ACC<Real>& acceleration,
const ACC<Real>& Rho, const Real* dt, const int* lattIdx) {
#ifdef OPS_2D
const Real x{coordinates(0, 0, 0)};
const Real y{coordinates(1, 0, 0)};
VertexType vt = (VertexType)nodeType(0, 0);
if (vt != VertexType::ImmersedSolid) {
Real v{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
v += CS * XI[xiIdx * LATTDIM + 1] * f(xiIdx, 0, 0);
}
v /= Rho(0, 0);
if (VertexType::Fluid == vt || VertexType::MDPeriodic == vt) {
v += ((*dt) * acceleration(1, 0, 0) / 2);
}
#ifdef CPU
if (isnan(v) || isinf(v)) {
ops_printf(
"Error! Velocity V=%f becomes invalid! Maybe something wrong "
"at x=%f y=%f\n",
v, x, y);
assert(!(isnan(v) || isinf(v)));
}
#endif
V(0, 0) = v;
}
#endif // OPS_2D
}
/*!
* If a Newton-Cotes quadrature is used, it can be converted to the way
* similar to the Gauss-Hermite quadrature *
*/
void KerInitialiseBGK2nd(ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& Rho, const ACC<Real>& U,
const ACC<Real>& V, const int* lattIdx) {
#ifdef OPS_2D
VertexType vt = (VertexType)nodeType(0, 0);
if (vt != VertexType::ImmersedSolid) {
Real rho{Rho(0, 0)};
Real u{U(0, 0)};
Real v{V(0, 0)};
const Real T{1};
const int polyOrder{2};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
f(xiIdx, 0, 0) = CalcBGKFeq(xiIdx, rho, u, v, T, polyOrder);
#ifdef CPU
const Real res{f(xiIdx, 0, 0)};
if (isnan(res) || res <= 0 || isinf(res)) {
ops_printf(
"Error! Distribution function %f becomes invalid at the "
"lattice %i\n",
res, xiIdx);
assert(!(isnan(res) || res <= 0 || isinf(res)));
}
#endif // CPU
}
}
#endif // OPS_2D
}
void KerCollideBGKIsothermal(ACC<Real>& fStage, const ACC<Real>& f,
const ACC<Real>& coordinates,
const ACC<int>& nodeType, const ACC<Real>& Rho,
const ACC<Real>& U, const ACC<Real>& V,
const Real* tauRef,
const Real* dt, const int* lattIdx) {
#ifdef OPS_2D
VertexType vt = (VertexType)nodeType(0, 0);
// collisionRequired: means if collision is required at boundary
// e.g., the ZouHe boundary condition explicitly requires collision
bool collisionRequired = (vt != VertexType::ImmersedSolid);
if (collisionRequired) {
Real rho{Rho(0, 0)};
Real u{U(0, 0)};
Real v{V(0, 0)};
const Real T{1};
const int polyOrder{2};
Real tau = (*tauRef);
Real dtOvertauPlusdt = (*dt) / (tau + 0.5 * (*dt));
for (int xiIndex = lattIdx[0]; xiIndex <= lattIdx[1]; xiIndex++) {
const Real feq{CalcBGKFeq(xiIndex, rho, u, v, T, polyOrder)};
if (vt == VertexType::Fluid || vt == VertexType::MDPeriodic) {
fStage(xiIndex, 0, 0) =
feq + (1 - dtOvertauPlusdt) * (f(xiIndex, 0, 0) - feq) +
tau * dtOvertauPlusdt * fStage(xiIndex, 0, 0);
} else {
fStage(xiIndex, 0, 0) =
feq + (1 - dtOvertauPlusdt) * (f(xiIndex, 0, 0) - feq);
}
#ifdef CPU
const Real res{fStage(xiIndex, 0, 0)};
if (isnan(res) || res <= 0 || isinf(res)) {
ops_printf(
"Error! Distribution function = %e becomes invalid at "
"the lattice %i where feq=%e and rho=%e u=%e v=%e at "
"x=%e y=%e\n",
res, xiIndex, feq, rho, u, v, coordinates(0, 0, 0),
coordinates(1, 0, 0));
assert(!(isnan(res) || res <= 0 || isinf(res)));
}
#endif // CPU
}
}
#endif // OPS_2D
}
void KerCollideBGKThermal(ACC<Real>& fStage, const ACC<Real>& f,
const ACC<int>& nodeType, const ACC<Real>& Rho,
const ACC<Real>& U, const ACC<Real>& V,
const ACC<Real>& Temperature, const Real* tauRef,
const Real* dt, const int* lattIdx) {
#ifdef OPS_2D
VertexType vt = (VertexType)nodeType(0, 0);
// collisionRequired: means if collision is required at boundary
// e.g., the ZouHe boundary condition explicitly requires collision
bool collisionRequired = (vt != VertexType::ImmersedSolid);
if (collisionRequired) {
Real rho{Rho(0, 0)};
Real u{U(0, 0)};
Real v{V(0, 0)};
Real T{Temperature(0, 0)};
const int polyOrder{4};
Real tau = (*tauRef) / (rho * sqrt(T));
Real dtOvertauPlusdt = (*dt) / (tau + 0.5 * (*dt));
for (int xiIndex = lattIdx[0]; xiIndex <= lattIdx[1]; xiIndex++) {
const Real feq{CalcBGKFeq(xiIndex, rho, u, v, T, polyOrder)};
if (vt == VertexType::Fluid || vt == VertexType::MDPeriodic) {
fStage(xiIndex, 0, 0) =
f(xiIndex, 0, 0) -
dtOvertauPlusdt * (f(xiIndex, 0, 0) - feq) +
tau * dtOvertauPlusdt * fStage(xiIndex, 0, 0);
} else {
fStage(xiIndex, 0, 0) =
f(xiIndex, 0, 0) -
dtOvertauPlusdt * (f(xiIndex, 0, 0) - feq);
}
#ifdef CPU
const Real res{fStage(xiIndex, 0, 0)};
if (isnan(res) || res <= 0 || isinf(res)) {
ops_printf(
"Error! Distribution function %f becomes invalid at the "
"lattice %i\n",
res, xiIndex);
assert(!(isnan(res) || res <= 0 || isinf(res)));
}
#endif // CPU
}
}
#endif // OPS_2D
}
void KerCalcBodyForce1ST(ACC<Real>& fStage, const ACC<Real>& acceration,
const ACC<Real>& Rho, const ACC<int>& nodeType,
const int* lattIdx) {
#ifdef OPS_2D
VertexType vt = (VertexType)nodeType(0, 0);
if (vt == VertexType::Fluid || vt == VertexType::MDPeriodic) {
Real rho{Rho(0, 0)};
Real g[]{acceration(0, 0, 0), acceration(1, 0, 0)};
for (int xiIndex = lattIdx[0]; xiIndex <= lattIdx[1]; xiIndex++) {
const Real bodyForce{CalcBodyForce(xiIndex, rho, g)};
#ifdef CPU
if (isnan(bodyForce) || isinf(bodyForce)) {
ops_printf(
"Error! Body force %f becomes invalid at the lattice "
"%i\n",
bodyForce, xiIndex);
assert(!(isnan(bodyForce) || isinf(bodyForce)));
}
#endif
fStage(xiIndex, 0, 0) = bodyForce;
}
}
#endif // OPS_2D
}
void KerCalcBodyForceNone(ACC<Real>& fStage, const ACC<Real>& acceration,
const ACC<int>& nodeType, const int* lattIdx) {
#ifdef OPS_2D
VertexType vt = (VertexType)nodeType(0, 0);
if (vt == VertexType::Fluid || vt == VertexType::MDPeriodic) {
for (int xiIndex = lattIdx[0]; xiIndex <= lattIdx[1]; xiIndex++) {
fStage(xiIndex, 0, 0) = 0;
}
}
#endif // OPS_2D
}
#endif // OPS_2D outter
#ifdef OPS_3D
void KerInitialiseBGK2nd3D(ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& Rho, const ACC<Real>& U,
const ACC<Real>& V, const ACC<Real>& W,
const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt != VertexType::ImmersedSolid) {
Real rho{Rho(0, 0, 0)};
Real u{U(0, 0, 0)};
Real v{V(0, 0, 0)};
Real w{W(0, 0, 0)};
const Real T{1};
const int polyOrder{2};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
f(xiIdx, 0, 0, 0) = CalcBGKFeq(xiIdx, rho, u, v, w, T, polyOrder);
#ifdef CPU
const Real res{f(xiIdx, 0, 0, 0)};
if (isnan(res) || res <= 0 || isinf(res)) {
ops_printf(
"Error! Distribution function %f becomes invalid at the "
"lattice %i\n",
res, xiIdx);
assert(!(isnan(res) || res <= 0 || isinf(res)));
}
#endif // CPU
}
}
#endif // OPS_3D
}
void KerCollideBGKIsothermal3Dpseudo(ACC<Real>& fStage, const ACC<Real>& f,
const ACC<Real>& coordinates,
const ACC<int>& nodeType, const ACC<Real>& Rho,
const ACC<Real>& U, const ACC<Real>& V,
const ACC<Real>& W, const ACC<Real>& acceration, const ACC<Real>& conacceration, const Real* tauRef,
const Real* dt, const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
// collisionRequired: means if collision is required at boundary
// e.g., the ZouHe boundary condition explicitly requires collision
bool collisionRequired = (vt != VertexType::ImmersedSolid);
if (collisionRequired) {
Real rho{Rho(0, 0, 0)};
Real u{U(0, 0, 0)};
Real v{V(0, 0, 0)};
Real w{W(0, 0, 0)};
Real g[]{acceration(0, 0, 0, 0), acceration(1, 0, 0, 0),
acceration(2, 0, 0, 0)};
Real cong[]{conacceration(0, 0, 0, 0), conacceration(1, 0, 0, 0),
conacceration(2, 0, 0, 0)};
Real gplus[]{g[0]+cong[0], g[1]+cong[1],
g[2]+cong[2]};
Real u1{u + 0.5*gplus[0] / rho};
Real v1{v + 0.5*gplus[1] / rho};
Real w1{w + 0.5*gplus[2] / rho};
const Real T{1};
const int polyOrder{2};
Real tau = (*tauRef);
Real dtOvertauPlusdt = (*dt) / tau;
for (int xiIndex = lattIdx[0]; xiIndex <= lattIdx[1]; xiIndex++) {
const Real feq{CalcBGKBodyForce(xiIndex, rho, u1, v1, w1, T, polyOrder)};
if (vt == VertexType::Fluid || vt == VertexType::MDPeriodic || vt == VertexType::Wall) {
fStage(xiIndex, 0, 0, 0) =
feq + (1 - dtOvertauPlusdt) * (f(xiIndex, 0, 0, 0) - feq) + fStage(xiIndex, 0, 0, 0);
} else {
fStage(xiIndex, 0, 0, 0) =
feq + (1 - dtOvertauPlusdt) * (f(xiIndex, 0, 0, 0) - feq);
}
#ifdef CPU
const Real res{fStage(xiIndex, 0, 0, 0)};
if (isnan(res) || res <= 0 || isinf(res)) {
ops_printf(
"Error! Distribution function = %e becomes invalid at "
"the lattice %i where feq=%e and rho=%e u=%e v=%e w=%e at "
"x=%e y=%e z=%e\n",
res, xiIndex, feq, rho, u, v, w, coordinates(0, 0, 0, 0),
coordinates(1, 0, 0, 0), coordinates(2, 0, 0, 0));
assert(!(isnan(res) || res <= 0 || isinf(res)));
}
#endif // CPU
}
}
#endif // OPS_3D
}
void KerCollideNMRTIsothermal3Dpseudo(ACC<Real>& mStage, const ACC<Real>& m,
const ACC<Real>& coordinates,
const ACC<int>& nodeType, const ACC<Real>& Rho,
const ACC<Real>& U, const ACC<Real>& V,
const ACC<Real>& W, const Real* tauRef,
const Real* dt, const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
// collisionRequired: means if collision is required at boundary
// e.g., the ZouHe boundary condition explicitly requires collision
bool collisionRequired = (vt != VertexType::ImmersedSolid);
if (collisionRequired) {
Real rho{Rho(0, 0, 0)};
Real u{U(0, 0, 0)};
Real v{V(0, 0, 0)};
Real w{W(0, 0, 0)};
Real uu{u*u+v*v+w*w};
const Real T{1};
const int polyOrder{2};
Real tau = (*tauRef);
Real S[27] = {1.0,1.0,1.0,1.0,1.2,1.2,1.2,0.6,1.2,1.2,1.2,1.2,1.2,1.2,1.2,1.2,0.6,1.2,1.2,1.2,1.2,1.2,1.2,1.2,1.2,1.2,1.2};
const Real meq[27] = {rho,rho*u,rho*v,rho*w,rho*u*v,rho*u*w,rho*v*w,rho*(1.0+uu),rho*(u*u-v*v),rho*(u*u-w*w),
rho/CS/CS*u,rho/CS/CS*u,rho/CS/CS*v,rho/CS/CS*w,rho/CS/CS*v,rho/CS/CS*w,0,rho/CS/CS*(1.0/CS/CS+u*u+v*v),
rho/CS/CS*(1.0/CS/CS+u*u+w*w),rho/CS/CS*(1.0/CS/CS+w*w+v*v),rho/CS/CS*v*w,rho/CS/CS*u*w,rho/CS/CS*u*v,
rho/CS/CS/CS/CS*u,rho/CS/CS/CS/CS*v,rho/CS/CS/CS/CS*w,rho/CS/CS/CS/CS*uu+rho/CS/CS/CS/CS/CS/CS};
for (int xiIndex = lattIdx[0]; xiIndex <= lattIdx[1]; xiIndex++) {
if (vt == VertexType::Fluid || vt == VertexType::MDPeriodic) {
mStage(xiIndex, 0, 0, 0) =
m(xiIndex, 0, 0, 0) - S[xiIndex] * (m(xiIndex, 0, 0, 0) - meq[xiIndex]) + mStage(xiIndex, 0, 0, 0);
} else {
mStage(xiIndex, 0, 0, 0) =
m(xiIndex, 0, 0, 0) - S[xiIndex] * (m(xiIndex, 0, 0, 0) - meq[xiIndex]);
}
#ifdef CPU
const Real res{mStage(xiIndex, 0, 0, 0)};
if (isnan(res) || res <= 0 || isinf(res)) {
ops_printf(
"Error! Distribution function = %e becomes invalid at "
"the lattice %i where feq=%e and rho=%e u=%e v=%e w=%e at "
"x=%e y=%e z=%e\n",
res, xiIndex, meq[xiIndex], rho, u, v, w, coordinates(0, 0, 0, 0),
coordinates(1, 0, 0, 0), coordinates(2, 0, 0, 0));
assert(!(isnan(res) || res <= 0 || isinf(res)));
}
#endif // CPU
}
}
#endif // OPS_3D
}
void KerCollideBGKIsothermal3D(ACC<Real>& fStage, const ACC<Real>& f,
const ACC<Real>& coordinates,
const ACC<int>& nodeType, const ACC<Real>& Rho,
const ACC<Real>& U, const ACC<Real>& V,
const ACC<Real>& W, const Real* tauRef,
const Real* dt, const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
// collisionRequired: means if collision is required at boundary
// e.g., the ZouHe boundary condition explicitly requires collision
bool collisionRequired = (vt != VertexType::ImmersedSolid);
if (collisionRequired) {
Real rho{Rho(0, 0, 0)};
Real u{U(0, 0, 0)};
Real v{V(0, 0, 0)};
Real w{W(0, 0, 0)};
const Real T{1};
const int polyOrder{2};
Real tau = (*tauRef);
Real dtOvertauPlusdt = (*dt) / (tau + 0.5 * (*dt));
for (int xiIndex = lattIdx[0]; xiIndex <= lattIdx[1]; xiIndex++) {
const Real feq{CalcBGKFeq(xiIndex, rho, u, v, w, T, polyOrder)};
if (vt == VertexType::Fluid || vt == VertexType::MDPeriodic) {
fStage(xiIndex, 0, 0, 0) =
feq + (1 - dtOvertauPlusdt) * (f(xiIndex, 0, 0, 0) - feq) +
tau * dtOvertauPlusdt * fStage(xiIndex, 0, 0, 0);
} else {
fStage(xiIndex, 0, 0, 0) =
feq + (1 - dtOvertauPlusdt) * (f(xiIndex, 0, 0, 0) - feq);
}
#ifdef CPU
const Real res{fStage(xiIndex, 0, 0, 0)};
if (isnan(res) || res <= 0 || isinf(res)) {
ops_printf(
"Error! Distribution function = %e becomes invalid at "
"the lattice %i where feq=%e and rho=%e u=%e v=%e w=%e at "
"x=%e y=%e z=%e\n",
res, xiIndex, feq, rho, u, v, w, coordinates(0, 0, 0, 0),
coordinates(1, 0, 0, 0), coordinates(2, 0, 0, 0));
assert(!(isnan(res) || res <= 0 || isinf(res)));
}
#endif // CPU
}
}
#endif // OPS_3D
}
void KerCollideBGKThermal3D(ACC<Real>& fStage, const ACC<Real>& f,
const ACC<int>& nodeType, const ACC<Real>& Rho,
const ACC<Real>& U, const ACC<Real>& V,
const ACC<Real>& W, const ACC<Real>& Temperature,
const Real* tauRef, const Real* dt,
const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
// collisionRequired: means if collision is required at boundary
// e.g., the ZouHe boundary condition explicitly requires collision
bool collisionRequired = (vt != VertexType::ImmersedSolid);
if (collisionRequired) {
Real rho{Rho(0, 0, 0)};
Real u{U(0, 0, 0)};
Real v{V(0, 0, 0)};
Real w{W(0, 0, 0)};
Real T{Temperature(0, 0, 0)};
const int polyOrder{4};
Real tau = (*tauRef) / (rho * sqrt(T));
Real dtOvertauPlusdt = (*dt) / (tau + 0.5 * (*dt));
for (int xiIndex = lattIdx[0]; xiIndex <= lattIdx[1]; xiIndex++) {
const Real feq{CalcBGKFeq(xiIndex, rho, u, v, w, T, polyOrder)};
if (vt == VertexType::Fluid || vt == VertexType::MDPeriodic) {
fStage(xiIndex, 0, 0, 0) =
f(xiIndex, 0, 0, 0) -
dtOvertauPlusdt * (f(xiIndex, 0, 0, 0) - feq) +
tau * dtOvertauPlusdt * fStage(xiIndex, 0, 0, 0);
} else {
fStage(xiIndex, 0, 0, 0) =
f(xiIndex, 0, 0, 0) -
dtOvertauPlusdt * (f(xiIndex, 0, 0, 0) - feq);
}
#ifdef CPU
const Real res{fStage(xiIndex, 0, 0, 0)};
if (isnan(res) || res <= 0 || isinf(res)) {
ops_printf(
"Error! Distribution function %f becomes invalid at the "
"lattice %i\n",
res, xiIndex);
assert(!(isnan(res) || res <= 0 || isinf(res)));
}
#endif // CPU
}
}
#endif // OPS_3D
}
void KerCalcBodyForce1ST3D(ACC<Real>& fStage, const ACC<Real>& acceration, const ACC<Real>& conacceration, const ACC<Real>& Psi,
const ACC<Real>& Rho,const ACC<Real>& U, const ACC<Real>& V, const ACC<Real>& W,
const ACC<int>& nodeType, const Real* tauRef, const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt == VertexType::Fluid || vt == VertexType::MDPeriodic || vt == VertexType::Wall) {
Real u{U(0, 0, 0)};
Real v{V(0, 0, 0)};
Real w{W(0, 0, 0)};
Real tau{*tauRef};
Real g[]{acceration(0, 0, 0, 0), acceration(1, 0, 0, 0),
acceration(2, 0, 0, 0)};
Real cong[]{conacceration(0, 0, 0, 0), conacceration(1, 0, 0, 0),
conacceration(2, 0, 0, 0)};
Real gplus[]{g[0]+cong[0], g[1]+cong[1],
g[2]+cong[2]};
Real u1 = u + 0.5*gplus[0] / Rho(0,0,0);
Real v1 = v + 0.5*gplus[1] / Rho(0,0,0);
Real w1 = w + 0.5*gplus[2] / Rho(0,0,0);
Real sigma = 0.105;
Real u2 = u1 + sigma*g[0] / Psi(0,0,0) / Psi(0,0,0) / (tau-0.5);
Real v2 = v1 + sigma*g[1] / Psi(0,0,0) / Psi(0,0,0) / (tau-0.5);
Real w2 = w1 + sigma*g[2] / Psi(0,0,0) / Psi(0,0,0) / (tau-0.5);
for (int xiIndex = lattIdx[0]; xiIndex <= lattIdx[1]; xiIndex++) {
//const Real feq{CalcBGKFeqpseudo3D(xiIndex, Rho(0,0,0), u, v, w, gplus, 2)};
const Real feq1{CalcBGKFeqpseudo3D(xiIndex, Rho(0,0,0), u2, v2, w2, gplus, tau)};
Real bodyForce = feq1;
#ifdef CPU
if (isnan(bodyForce) || isinf(bodyForce)) {
ops_printf(
"Error! Body force %f becomes invalid at the lattice "
"%i\n",
bodyForce, xiIndex);
assert(!(isnan(bodyForce) || isinf(bodyForce)));
}
#endif
fStage(xiIndex, 0, 0, 0) = bodyForce;
}
}
#endif // OPS_3D
}
void KerCalcBodyForceNone3D(ACC<Real>& fStage, const ACC<Real>& acceration,
const ACC<int>& nodeType, const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt == VertexType::Fluid || vt == VertexType::MDPeriodic) {
for (int xiIndex = lattIdx[0]; xiIndex <= lattIdx[1]; xiIndex++) {
fStage(xiIndex, 0, 0, 0) = 0;
}
}
#endif // OPS_3D
}
void KerCalcDensity3D(ACC<Real>& Rho, const ACC<Real>& f,
const ACC<int>& nodeType, const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt != VertexType::ImmersedSolid) {
Real rho{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
rho += f(xiIdx, 0, 0, 0);
}
#ifdef CPU
if (isnan(rho) || rho <= 0 || isinf(rho)) {
ops_printf(
"Error! Density %f becomes invalid！Something "
"wrong...",
rho);
assert(!(isnan(rho) || rho <= 0 || isinf(rho)));
}
#endif
Rho(0, 0, 0) = rho;
}
#endif // OPS_3D
}
void KerCalcP3D(ACC<Real>& P, const ACC<int>& nodeType,
const ACC<Real>& Rho) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt != VertexType::ImmersedSolid) {
Real p{0};
Real a = 1.0;
Real b = 4.0;
Real R = 1.0;
Real T = 0.75*0.3773*a/(b*R);
Real temp = b * Rho(0,0,0) / 4.0;
p = Rho(0,0,0) * R * T * (1.0 + temp + temp * temp - temp * temp * temp) / (1 - temp) / (1 - temp) / (1 - temp) - a * Rho(0,0,0) * Rho(0,0,0);
#ifdef CPU
if (isnan(p) || isinf(p)) {
ops_printf(
"Error! Pressure P=%f becomes invalid! "
"Maybe something wrong...\n",
p);
assert(!(isnan(p) || isinf(p)));
}
#endif
P(0, 0, 0) = p;
}
#endif // OPS_3D
}
void KerCalcPsi3D(ACC<Real>& Psi, const ACC<Real>& Rho, const ACC<int>& nodeType,
const ACC<Real>& P) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt != VertexType::ImmersedSolid) {
Real psi{0};
Real G = -1.0;
if (P(0, 0, 0) - Rho(0,0,0) / CS / CS > 0) G = 1.0;
psi = sqrt((2.0 * (P(0,0,0) - Rho(0,0,0) / CS / CS)) / G * CS * CS);
#ifdef CPU
if (isnan(psi) || isinf(psi)) {
ops_printf(
"Error! Velocity Psi=%f becomes invalid! "
"Maybe something wrong...\n",
Psi);
assert(!(isnan(Psi(0,0,0)) || isinf(Psi(0,0,0))));
}
#endif
Psi(0, 0, 0) = psi;
}
#endif // OPS_3D
}
void KerCalcU3D(ACC<Real>& U, const ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& Rho, const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt != VertexType::ImmersedSolid) {
Real u{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
u += XI[xiIdx * LATTDIM] * f(xiIdx, 0, 0, 0);
}
u = u / Rho(0, 0, 0);// + 0.5 * acceration(0,0,0,0) / Rho(0, 0, 0);
#ifdef CPU
if (isnan(u) || isinf(u)) {
ops_printf(
"Error! Velocity U=%f becomes invalid! "
"Maybe something wrong...\n",
u);
assert(!(isnan(u) || isinf(u)));
}
#endif
U(0, 0, 0) = u;
}
#endif // OPS_3D
}
void KerCalcV3D(ACC<Real>& V, const ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& Rho, const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt != VertexType::ImmersedSolid) {
Real v{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
v += XI[xiIdx * LATTDIM + 1] * f(xiIdx, 0, 0, 0);
}
v = v / Rho(0, 0, 0);// + 0.5 * acceration(1,0,0,0) / Rho(0, 0, 0);
#ifdef CPU
if (isnan(v) || isinf(v)) {
ops_printf(
"Error! Velocity V=%f becomes invalid! "
"Maybe something wrong...\n",
v);
assert(!(isnan(v) || isinf(v)));
}
#endif
V(0, 0, 0) = v;
}
#endif // OPS_3D
}
void KerCalcW3D(ACC<Real>& W, const ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& Rho, const int* lattIdx) {
#ifdef OPS_3D
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt != VertexType::ImmersedSolid) {
Real w{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
w += XI[xiIdx * LATTDIM + 2] * f(xiIdx, 0, 0, 0);
}
w = w / Rho(0, 0, 0);// + 0.5 * acceration(2,0,0,0) / Rho(0, 0, 0);
#ifdef CPU
if (isnan(w) || isinf(w)) {
ops_printf(
"Error! Velocity W=%f becomes invalid! "
"Maybe something wrong...\n",
w);
assert(!(isnan(w) || isinf(w)));
}
#endif
W(0, 0, 0) = w;
}
#endif // OPS_3D
}
void KerCalcUForce3D(ACC<Real>& U, const ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& coordinates,
const ACC<Real>& acceleration, const ACC<Real>& Rho,
const Real* dt, const int* lattIdx) {
#ifdef OPS_3D
const Real x{coordinates(0, 0, 0, 0)};
const Real y{coordinates(1, 0, 0, 0)};
const Real z{coordinates(2, 0, 0, 0)};
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt != VertexType::ImmersedSolid) {
Real u{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
u += CS * XI[xiIdx * LATTDIM] * f(xiIdx, 0, 0, 0);
}
u /= Rho(0, 0, 0);
if (VertexType::Fluid == vt || VertexType::MDPeriodic == vt) {
u += ((*dt) * acceleration(0, 0, 0, 0) / 2);
}
#ifdef CPU
if (isnan(u) || isinf(u)) {
ops_printf(
"Error! Velocity U=%f becomes invalid! Maybe something wrong "
"at x=%f y=%f z=%f\n",
u, x, y, z);
assert(!(isnan(u) || isinf(u)));
}
#endif
U(0, 0, 0) = u;
}
#endif // OPS_3D
}
void KerCalcVForce3D(ACC<Real>& V, const ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& coordinates,
const ACC<Real>& acceleration, const ACC<Real>& Rho,
const Real* dt, const int* lattIdx) {
#ifdef OPS_3D
const Real x{coordinates(0, 0, 0, 0)};
const Real y{coordinates(1, 0, 0, 0)};
const Real z{coordinates(2, 0, 0, 0)};
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt != VertexType::ImmersedSolid) {
Real v{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
v += CS * XI[xiIdx * LATTDIM + 1] * f(xiIdx, 0, 0, 0);
}
v /= Rho(0, 0, 0);
if (VertexType::Fluid == vt || VertexType::MDPeriodic == vt) {
v += ((*dt) * acceleration(1, 0, 0, 0) / 2);
}
#ifdef CPU
if (isnan(v) || isinf(v)) {
ops_printf(
"Error! Velocity V=%f becomes invalid! Maybe something wrong "
"at x=%f y=%f z=%f\n",
v, x, y, z);
assert(!(isnan(v) || isinf(v)));
}
#endif
V(0, 0, 0) = v;
}
#endif // OPS_3D
}
void KerCalcWForce3D(ACC<Real>& W, const ACC<Real>& f, const ACC<int>& nodeType,
const ACC<Real>& coordinates,
const ACC<Real>& acceleration, const ACC<Real>& Rho,
const Real* dt, const int* lattIdx) {
#ifdef OPS_3D
const Real x{coordinates(0, 0, 0, 0)};
const Real y{coordinates(1, 0, 0, 0)};
const Real z{coordinates(2, 0, 0, 0)};
VertexType vt = (VertexType)nodeType(0, 0, 0);
if (vt != VertexType::ImmersedSolid) {
Real w{0};
for (int xiIdx = lattIdx[0]; xiIdx <= lattIdx[1]; xiIdx++) {
w += CS * XI[xiIdx * LATTDIM + 2] * f(xiIdx, 0, 0, 0);
}
w /= Rho(0, 0, 0);
if (VertexType::Fluid == vt || VertexType::MDPeriodic == vt) {
w += ((*dt) * acceleration(2, 0, 0, 0) / 2);
}
#ifdef CPU
if (isnan(w) || isinf(w)) {
ops_printf(
"Error! Velocity W=%f becomes invalid! Maybe something wrong "
"at x=%f y=%f z=%f\n",
w, x, y, z);
assert(!(isnan(w) || isinf(w)));
}
#endif
W(0, 0, 0) = w;
}
#endif //OPS_3D
}
#endif //OPS_3D outter
#endif //MODEL_KERNEL_INC