void Foam::timeVaryingFlowRateInletVelocityFvPatchVectorField::
updateCoeffs()
{
if (updated())
{
return;
}
flowRate() = timeSeries_(this->db().time().timeOutputValue());
flowRateInletVelocityFvPatchVectorField::updateCoeffs();
}
double ChromoConditions::dV() const
{
if (mDV == 0.0)
{
return flowRate() / 20.0;
}
else
{
return mDV;
}
}
void ViscosityFO<EvalT, Traits>::
evaluateFields(typename Traits::EvalData workset)
{
double a = 1.0;
switch (visc_type) {
case CONSTANT:
for (std::size_t cell=0; cell < workset.numCells; ++cell) {
for (std::size_t qp=0; qp < numQPs; ++qp)
mu(cell,qp) = 1.0;
}
break;
case EXPTRIG:
for (std::size_t cell=0; cell < workset.numCells; ++cell) {
for (std::size_t qp=0; qp < numQPs; ++qp) {
MeshScalarT x = coordVec(cell,qp,0);
MeshScalarT y2pi = 2.0*pi*coordVec(cell,qp,1);
MeshScalarT muargt = (a*a + 4.0*pi*pi - 2.0*pi*a)*sin(y2pi)*sin(y2pi) + 1.0/4.0*(2.0*pi+a)*(2.0*pi+a)*cos(y2pi)*cos(y2pi);
muargt = sqrt(muargt)*exp(a*x);
mu(cell,qp) = 1.0/2.0*pow(A, -1.0/n)*pow(muargt, 1.0/n - 1.0);
}
}
break;
case GLENSLAW:
std::vector<ScalarT> flowFactorVec; //create vector of the flow factor A at each cell
flowFactorVec.resize(workset.numCells);
switch (flowRate_type) {
case UNIFORM:
for (std::size_t cell=0; cell < workset.numCells; ++cell)
flowFactorVec[cell] = 1.0/2.0*pow(A, -1.0/n);
break;
case TEMPERATUREBASED:
for (std::size_t cell=0; cell < workset.numCells; ++cell)
flowFactorVec[cell] = 1.0/2.0*pow(flowRate(temperature(cell)), -1.0/n);
break;
case FROMFILE:
case FROMCISM:
for (std::size_t cell=0; cell < workset.numCells; ++cell)
flowFactorVec[cell] = 1.0/2.0*pow(flowFactorA(cell), -1.0/n);
break;
}
double power = 0.5*(1.0/n - 1.0);
if (homotopyParam == 0.0) { //set constant viscosity
for (std::size_t cell=0; cell < workset.numCells; ++cell) {
for (std::size_t qp=0; qp < numQPs; ++qp) {
mu(cell,qp) = flowFactorVec[cell];
}
}
}
else { //set Glen's law viscosity with regularization specified by homotopyParam
ScalarT ff = pow(10.0, -10.0*homotopyParam);
ScalarT epsilonEqpSq = 0.0; //used to define the viscosity in non-linear Stokes
for (std::size_t cell=0; cell < workset.numCells; ++cell) {
for (std::size_t qp=0; qp < numQPs; ++qp) {
//evaluate non-linear viscosity, given by Glen's law, at quadrature points
ScalarT& u00 = Ugrad(cell,qp,0,0); //epsilon_xx
ScalarT& u11 = Ugrad(cell,qp,1,1); //epsilon_yy
epsilonEqpSq = u00*u00 + u11*u11 + u00*u11; //epsilon_xx^2 + epsilon_yy^2 + epsilon_xx*epsilon_yy
epsilonEqpSq += 0.25*(Ugrad(cell,qp,0,1) + Ugrad(cell,qp,1,0))*(Ugrad(cell,qp,0,1) + Ugrad(cell,qp,1,0)); //+0.25*epsilon_xy^2
for (int dim = 2; dim < numDims; ++dim) //3D case
epsilonEqpSq += 0.25*(Ugrad(cell,qp,0,dim)*Ugrad(cell,qp,0,dim) + Ugrad(cell,qp,1,dim)*Ugrad(cell,qp,1,dim) ); // + 0.25*epsilon_xz^2 + 0.25*epsilon_yz^2
epsilonEqpSq += ff; //add regularization "fudge factor"
mu(cell,qp) = flowFactorVec[cell]*pow(epsilonEqpSq, power); //non-linear viscosity, given by Glen's law
}
}
}
break;
}
}
void ChromoConditions::recalculateSSConcentrations()
{
mSSConcentrations.clear();
if (gradient().empty())
{
return;
}
// If the gradient is isocratic, add a single point only.
if ((gradient().size() == 2)
&& (gradient().front().concentrationB()
== gradient().back().concentrationB()))
{
mSSConcentrations.push_back(
(100.0 - gradient().front().concentrationB()) / 100.0
* secondSolventConcentrationA()
+ gradient().front().concentrationB() / 100.0
* secondSolventConcentrationB());
return;
}
double secondSolventConcentrationPump = 0.0;
double time = dV() / 2.0 / flowRate();
int segmentNum = -1;
double localSlope = 0.0;
double initialSSConcentration, finalSSConcentration, initialTime,
finalTime, pumpedConcentration;
while (true)
{
if (time > gradient()[segmentNum+1].time())
{
if (segmentNum < int(gradient().size() - 1))
{
segmentNum += 1;
initialSSConcentration =
(100.0 - gradient()[segmentNum].concentrationB()) / 100.0
* secondSolventConcentrationA()
+ gradient()[segmentNum].concentrationB() / 100.0
* secondSolventConcentrationB();
finalSSConcentration =
(100.0 - gradient()[segmentNum+1].concentrationB()) / 100.0
* secondSolventConcentrationA()
+ gradient()[segmentNum+1].concentrationB() / 100.0
* secondSolventConcentrationB();
initialTime = gradient()[segmentNum].time();
finalTime = gradient()[segmentNum+1].time();
localSlope = (finalSSConcentration - initialSSConcentration)
/ (finalTime - initialTime);
}
else
{
break;
}
}
pumpedConcentration = localSlope * (time - initialTime)
+ initialSSConcentration;
// If mixingCorrection is enabled calculate second solvent concentrations
// from the equation
// d[SS] / dt = flowRate / (V0 + VP) * ([SS]pump - [SS])
// Otherwise, [SS] == [SS]pump
if (mixingCorrection())
{
// Special case for the first time point.
if (time == dV() / 2.0 / flowRate())
{
mSSConcentrations.push_back(
initialSSConcentration +
+ dV() / (columnInterstitialVolume() + columnPoreVolume())
* (pumpedConcentration - mSSConcentrations.back()) / 2.0);
}
else
{
mSSConcentrations.push_back(
mSSConcentrations.back()
+ dV() / (columnInterstitialVolume() + columnPoreVolume())
* (pumpedConcentration - mSSConcentrations.back()));
}
}
else
{
mSSConcentrations.push_back(pumpedConcentration);
}
time += dV() / flowRate();
}
}