void KEStencil::apply(FlowField& flowField, int i, int j) {
// calculate new value from old value and rhs
flowField.getTke(i, j) += _parameters.timestep.dt * flowField.getRHSTke(i, j);
flowField.getTke(i, j) *= flowField.getTke(i, j) < 0.0 ? 0.0 : 1.0;
flowField.getEpsilon(i, j) +=
_parameters.timestep.dt * flowField.getRHSEpsilon(i, j);
flowField.getEpsilon(i, j) *= flowField.getEpsilon(i, j) < 0.0 ? 0.0 : 1.0;
}
void RHSStencil::apply(FlowField& flowField, int i, int j, int k) {
// loadLocalNu3D(_parameters, flowField, _localNu, i, j, k);
loadLocalVelocity3D(flowField, _localVelocity, i, j, k);
loadLocalMeshsize3D(_parameters, _localMeshsize, i, j, k);
// load TKE
loadLocal3D([&flowField](FLOAT* local, int ii, int jj, int kk) mutable {
*(local + 0) = flowField.getTke(ii, jj, kk);
}, _localTKE, i, j, k);
// load epsilon
loadLocal3D([&flowField](FLOAT* local, int ii, int jj, int kk) mutable {
*(local + 0) = flowField.getEpsilon(ii, jj, kk);
}, _localEpsilon, i, j, k);
// load Fmu*Nut
loadLocal3D([&flowField](FLOAT* local, int ii, int jj, int kk) mutable {
*(local + 0) = flowField.getFmu(ii, jj, kk) * flowField.getNu(ii, jj, kk);
// *(local+0) = 0;
}, _localFmuNut, i, j, k);
const FLOAT sijsij = computeSijSij3D(_localVelocity, _localMeshsize);
const FLOAT f1 = flowField.getF1(i, j, k);
const FLOAT f2 = flowField.getF2(i, j, k);
const FLOAT f3 = flowField.getF3(i, j, k);
const FLOAT D = flowField.getD(i, j, k);
const FLOAT E = flowField.getE(i, j, k);
const FLOAT nut = flowField.getNu(i, j, k);
flowField.getsijsij(i, j, k) = sijsij;
// load nu + nut/sigmaK
loadLocal3D([&flowField, this](FLOAT* local, int ii, int jj, int kk) mutable {
*(local + 0) = this->_parameters.flow.visc +
flowField.getNu(ii, jj, kk) / this->_parameters.kEpsilon.sigmaK;
}, _localNu, i, j, k);
flowField.getRHSTke(i, j, k) =
computeRHStke(_parameters, _localVelocity, _localMeshsize, _localNu,
_localTKE, _localEpsilon, nut, sijsij, f3, D);
// load nu + nut/sigmaE
loadLocal3D([&flowField, this](FLOAT* local, int ii, int jj, int kk) mutable {
*(local + 0) = this->_parameters.flow.visc +
flowField.getNu(ii, jj, kk) / this->_parameters.kEpsilon.sigmaE;
}, _localNu, i, j, k);
flowField.getRHSEpsilon(i, j, k) =
computeRHSepsilon(_parameters, _localVelocity, _localMeshsize, _localNu,
_localTKE, _localEpsilon, nut, sijsij, f1, f2, E);
}
void KEStencilF::apply(FlowField& flowField, int i, int j, int k) {
// turbulent kinetic energy
wip.tke = flowField.getTke(i, j, k);
wip.tkes = (wip.tke > 0) - (wip.tke < 0);
wip.tke = fabs(wip.tke);
// dissipation rate
wip.epsilon = flowField.getEpsilon(i, j, k);
wip.epsilons = (wip.epsilon > 0) - (wip.epsilon < 0);
wip.epsilon = fabs(wip.epsilon);
// closest wall distance
wip.delta = flowField.getH(i, j, k);
// turbulent Reynolds numbers
wip.Rt = wip.tke * wip.tke * wip.Re / max(wip.epsilon, err);
wip.Rd = sqrt(wip.tke) * wip.delta * wip.Re;
// dimensionless wall distance
FLOAT uTau = pow(cmu, 0.25) * sqrt(wip.tke);
wip.yplus = uTau * wip.delta * wip.Re;
// calculate factors
calc();
// limitation for diffusion and reaction terms
// FLOAT gamma = flowField.getEpsilon(i,j,k)/max(1e-8, flowField.getTke(i,j,k));
// wop.f2 *= (wop.f2*gamma> 0.0) ? 1.0 : 0.0;
// wop.f3 = ( gamma> 0.0) ? 1.0 : 0.0;
// write factors
flowField.getFmu(i, j, k) = wop.fmu;
flowField.getF1(i, j, k) = wop.f1;
flowField.getF2(i, j, k) = wop.f2;
flowField.getF3(i, j, k) = wop.f3;
flowField.getD(i, j, k) = wop.D;
flowField.getE(i, j, k) = wop.E;
}