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Commit f02f564a authored by Thomas Fetzer's avatar Thomas Fetzer
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[kepsilon] Laufer's pipe problem works

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dumux/freeflow/rans/twoeq/kepsilon/model.hh
View file @ f02f564a
......@@ -26,55 +26,38 @@
*
* The k-epsilon models calculate the eddy viscosity with two additional PDEs,
* one for the turbulent kinetic energy (k) and for the dissipation (\f$ \varepsilon \f$).
* \todo fix everything below here
* The model uses the one proposed by Chien \cite Chien1982a.
* A good overview and additional models are given in Patel et al. \cite Patel1985a.
*
* The turbulent kinetic energy balance is identical with the one from the k-epsilon model,
* but the dissipation includes a dampening function (\f$ D_\varepsilon \f$):
* \f$ \varepsilon = \tilde{\varepsilon} + D_\varepsilon \f$:
* The model uses the one proposed by Launder and Sharma \cite Launder1994a.
*
* The turbulent kinetic energy balance is:
* \f[
* \frac{\partial \left( k \right)}{\partial t}
* + \nabla \cdot \left( \textbf{v} k \right)
* - \nabla \cdot \left( \left( \nu + \frac{\nu_\text{t}}{\sigma_\text{k}} \right) \nabla k \right)
* - 2 \nu_\text{t} \textbf{S} \cdot \textbf{S}
* + \tilde{\varepsilon}
* + D_\varepsilon
* + \varepsilon
* = 0
* \f].
*
* The dissipation balance is changed by introducing additional functions
* (\f$ E_\text{k}\f$, \f$ f_1 \f$, and \f$ f_2 \f$) to account for a dampening towards the wall:
* The dissipation balance is:
* \f[
* \frac{\partial \left( \tilde{\varepsilon} \right)}{\partial t}
* + \nabla \cdot \left( \textbf{v} \tilde{\varepsilon} \right)
* - \nabla \cdot \left( \left( \nu + \frac{\nu_\text{t}}{\sigma_{\varepsilon}} \right) \nabla \tilde{\varepsilon} \right)
* - C_{1\tilde{\varepsilon}} f_1 \frac{\tilde{\varepsilon}}{k} 2 \nu_\text{t} \textbf{S} \cdot \textbf{S}
* + C_{2\tilde{\varepsilon}} f_2 \frac{\tilde{\varepsilon}^2}{k}
* - E_\text{k}
* \frac{\partial \left( \varepsilon \right)}{\partial t}
* + \nabla \cdot \left( \textbf{v} \varepsilon \right)
* - \nabla \cdot \left( \left( \nu + \frac{\nu_\text{t}}{\sigma_{\varepsilon}} \right) \nabla \varepsilon \right)
* - C_{1\varepsilon} \frac{\varepsilon}{k} 2 \nu_\text{t} \textbf{S} \cdot \textbf{S}
* + C_{2\varepsilon} \frac{\varepsilon^2}{k}
* = 0
* \f].
*
* The kinematic eddy viscosity \f$ \nu_\text{t} \f$ is dampened by \f$ f_\mu \f$:
* The kinematic eddy viscosity \f$ \nu_\text{t} \f$ is:
* \f[
* \nu_\text{t} = C_\mu f_\mu \frac{k^2}{\tilde{\varepsilon}}
* \nu_\text{t} = C_\mu \frac{k^2}{\tilde{\varepsilon}}
* \f].
*
* The auxiliary and dampening functions are defined as:
* \f[ D_\varepsilon = 2 \nu \nicefrac{k}{y^2} \f]
* \f[ E_\text{k} = -2 \nu \frac{\tilde{\varepsilon}}{y^2} \exp \left( -0.5 y^+ \right) \f]
* \f[ f_1 = 1 \f]
* \f[ f_2 = 1 - 0.22 \exp \left( - \left( \frac{\mathit{Re}_\text{t}}{6} \right)^2 \right) \f]
* \f[ f_\mu = 1 - \exp \left( -0.0115 y^+ \right) \f]
* \f[ \mathit{Re}_\text{t} = \frac{k^2}{\nu \tilde{\varepsilon}} \f]
* .
*
* Finally, the model is closed with the following constants:
* \f[ \sigma_\text{k} = 1.00 \f]
* \f[ \sigma_\varepsilon =1.30 \f]
* \f[ C_{1\tilde{\varepsilon}} = 1.35 \f]
* \f[ C_{2\tilde{\varepsilon}} = 1.80 \f]
* \f[ C_{1\varepsilon} = 1.44 \f]
* \f[ C_{2\varepsilon} = 1.92 \f]
* \f[ C_\mu = 0.09 \f]
*/
......
dumux/freeflow/rans/twoeq/kepsilon/problem.hh
View file @ f02f564a
......@@ -65,7 +65,8 @@ public:
KEpsilonProblem(std::shared_ptr<const FVGridGeometry> fvGridGeometry)
: ParentType(fvGridGeometry)
{
useStoredEddyViscosity_ = getParamFromGroup<bool>(this->paramGroup(), "RANS.UseStoredEddyViscosity", true);
yPlusThreshold_ = getParamFromGroup<Scalar>(this->paramGroup(), "KEpsilon.YPlusThreshold", 30);
useStoredEddyViscosity_ = getParamFromGroup<bool>(this->paramGroup(), "RANS.UseStoredEddyViscosity", false);
}
/*!
......@@ -76,9 +77,12 @@ public:
ParentType::updateStaticWallProperties();
// update size and initial values of the global vectors
storedDissipationTilde_.resize(this->fvGridGeometry().elementMapper().size(), 0.0);
storedDynamicEddyViscosity_.resize(this->fvGridGeometry().elementMapper().size(), 0.0);
matchingPointID_.resize(this->fvGridGeometry().elementMapper().size(), 0);
storedDensity_.resize(this->fvGridGeometry().elementMapper().size(), 0.0);
storedDissipation_.resize(this->fvGridGeometry().elementMapper().size(), 0.0);
storedTurbulentKineticEnergy_.resize(this->fvGridGeometry().elementMapper().size(), 0.0);
storedDynamicEddyViscosity_.resize(this->fvGridGeometry().elementMapper().size(), 0.0);
zeroEqDynamicEddyViscosity_.resize(this->fvGridGeometry().elementMapper().size(), 0.0);
}
/*!
......@@ -90,6 +94,7 @@ public:
{
ParentType::updateDynamicWallProperties(curSol);
// update the stored eddy viscosities
for (const auto& element : elements(this->fvGridGeometry().gridView()))
{
unsigned int elementID = this->fvGridGeometry().elementMapper().index(element);
......@@ -103,21 +108,166 @@ public:
PrimaryVariables priVars = makePriVarsFromCellCenterPriVars<PrimaryVariables>(cellCenterPriVars);
auto elemSol = elementSolution<typename FVGridGeometry::LocalView>(std::move(priVars));
// NOTE: first update the turbulence quantities
storedDissipationTilde_[elementID] = elemSol[0][Indices::dissipationEqIdx];
storedDissipation_[elementID] = elemSol[0][Indices::dissipationEqIdx];
storedTurbulentKineticEnergy_[elementID] = elemSol[0][Indices::turbulentKineticEnergyEqIdx];
// NOTE: then update the volVars
VolumeVariables volVars;
volVars.update(elemSol, asImp_(), element, scv);
storedDynamicEddyViscosity_[elementID] = volVars.calculateEddyViscosity();
storedDensity_[elementID] = volVars.density();
}
}
// get matching point for k-epsilon wall function
unsigned int numElementsInWallRegion = 0;
for (const auto& element : elements(this->fvGridGeometry().gridView()))
{
unsigned int elementID = this->fvGridGeometry().elementMapper().index(element);
unsigned int wallNormalAxis = asImp_().wallNormalAxis_[elementID];
unsigned int neighborID0 = asImp_().neighborID_[elementID][wallNormalAxis][0];
unsigned int neighborID1 = asImp_().neighborID_[elementID][wallNormalAxis][1];
numElementsInWallRegion = inNearWallRegion(elementID) ? numElementsInWallRegion + 1 : numElementsInWallRegion + 0;
if ((inNearWallRegion(elementID) && (inNearWallRegion(neighborID0) != inNearWallRegion(neighborID1)))
|| (inNearWallRegion(elementID) && (asImp_().wallElementID_[neighborID0] != asImp_().wallElementID_[neighborID1]))
|| (elementID == asImp_().wallElementID_[elementID] && (!inNearWallRegion(neighborID0) || !inNearWallRegion(neighborID1))))
{
matchingPointID_[asImp_().wallElementID_[elementID]] = elementID;
}
}
std::cout << "numElementsInWallRegion: " << numElementsInWallRegion << std::endl;
// calculate the potential zeroeq eddy viscosities for two-layer model
for (const auto& element : elements(this->fvGridGeometry().gridView()))
{
unsigned int elementID = this->fvGridGeometry().elementMapper().index(element);
zeroEqDynamicEddyViscosity_[elementID] = zeroEqEddyViscosityModel(elementID);
}
// then make them match at the matching point
static const auto enableZeroEqScaling
= getParamFromGroup<bool>(this->paramGroup(), "KEpsilon.EnableZeroEqScaling", true);
if (enableZeroEqScaling)
{
for (const auto& element : elements(this->fvGridGeometry().gridView()))
{
unsigned int elementID = this->fvGridGeometry().elementMapper().index(element);
unsigned int matchingPointID = matchingPointID_[asImp_().wallElementID_[elementID]];
Scalar scalingFactor = storedDynamicEddyViscosity_[matchingPointID]
/ zeroEqDynamicEddyViscosity_[matchingPointID];
if (!isMatchingPoint(elementID)
&& !std::isnan(scalingFactor) && !std::isinf(scalingFactor))
{
zeroEqDynamicEddyViscosity_[elementID] *= scalingFactor;
}
}
for (const auto& element : elements(this->fvGridGeometry().gridView()))
{
unsigned int elementID = this->fvGridGeometry().elementMapper().index(element);
unsigned int matchingPointID = matchingPointID_[asImp_().wallElementID_[elementID]];
if (isMatchingPoint(elementID))
{
zeroEqDynamicEddyViscosity_[matchingPointID] = storedDynamicEddyViscosity_[matchingPointID];
}
}
}
}
/*!
* \brief Returns if an element is located in the near-wall region
*/
const bool inNearWallRegion(unsigned int elementID) const
{ return yPlus(elementID) < yPlusThreshold_; }
/*!
* \brief Returns if an element is the matching point
*/
const bool isMatchingPoint(unsigned int elementID) const
{ return matchingPointID_[asImp_().wallElementID_[elementID]] == elementID; }
/*!
* \brief Returns the \f$ y^+ \f$ value at an element center
*/
const Scalar yPlus(unsigned int elementID) const
{
return asImp_().wallDistance_[elementID] * uStar(elementID)
/ asImp_().kinematicViscosity_[elementID];
}
/*!
* \brief Returns the kinematic eddy viscosity of a 0-Eq. model
*/
const Scalar zeroEqEddyViscosityModel(unsigned int elementID) const
{
using std::abs;
using std::exp;
using std::sqrt;
// use VanDriest's model
Scalar yPlusValue = yPlus(elementID);
Scalar mixingLength = 0.0;
if (yPlusValue > 0.0)
{
mixingLength = asImp_().karmanConstant() * asImp_().wallDistance_[elementID]
* (1.0 - exp(-yPlusValue / 26.0 ))
/ sqrt(1.0 - exp(-0.26 * yPlusValue));
}
unsigned int wallNormalAxis = asImp_().wallNormalAxis_[elementID];
unsigned int flowNormalAxis = asImp_().flowNormalAxis_[elementID];
Scalar velocityGradient = asImp_().velocityGradients_[elementID][flowNormalAxis][wallNormalAxis];
return mixingLength * mixingLength * abs(velocityGradient) * storedDensity_[elementID];
}
//! \brief Returns the wall shear stress velocity
const Scalar uStar(unsigned int elementID) const
{
using std::abs;
using std::sqrt;
unsigned int wallElementID = asImp_().wallElementID_[elementID];
unsigned int wallNormalAxis = asImp_().wallNormalAxis_[elementID];
unsigned int flowNormalAxis = asImp_().flowNormalAxis_[elementID];
return sqrt(asImp_().kinematicViscosity_[wallElementID]
* abs(asImp_().velocityGradients_[wallElementID][flowNormalAxis][wallNormalAxis]));
}
//! \brief Returns the nominal wall shear stress velocity (accounts for poor approximation of viscous sublayer)
const Scalar uStarNominal(unsigned int elementID) const
{
using std::max;
using std::pow;
using std::sqrt;
unsigned int matchingPointID = matchingPointID_[asImp_().wallElementID_[elementID]];
return pow(0.09/*c_mu*/, 0.25)
* sqrt(max(storedTurbulentKineticEnergy_[matchingPointID],1e-8));
}
/*!
* \brief Returns the dissipation calculated from the wall function consideration
*/
const Scalar dissipationWallFunction(unsigned int elementID) const
{
return uStarNominal(elementID) * uStarNominal(elementID) * uStarNominal(elementID)
/ asImp_().karmanConstant() / asImp_().wallDistance_[elementID];
}
/*!
* \brief Returns the turbulentKineticEnergy calculated from the wall function consideration
*/
const Scalar turbulentKineticEnergyWallFunction(unsigned int elementID) const
{
return storedTurbulentKineticEnergy_[elementID];
}
public:
std::vector<Scalar> storedDissipationTilde_;
std::vector<Scalar> storedDynamicEddyViscosity_;
std::vector<unsigned int> matchingPointID_;
std::vector<Scalar> storedDensity_;
std::vector<Scalar> storedDissipation_;
std::vector<Scalar> storedTurbulentKineticEnergy_;
std::vector<Scalar> storedDynamicEddyViscosity_;
std::vector<Scalar> zeroEqDynamicEddyViscosity_;
bool useStoredEddyViscosity_;
Scalar yPlusThreshold_;
private:
//! Returns the implementation of the problem (i.e. static polymorphism)
......
dumux/freeflow/rans/twoeq/kepsilon/staggered/fluxvariables.hh
View file @ f02f564a
......@@ -71,10 +71,8 @@ class KEpsilonFluxVariablesImpl<TypeTag, BaseFluxVariables, DiscretizationMethod
using SubControlVolumeFace = typename FVElementGeometry::SubControlVolumeFace;
using CellCenterPrimaryVariables = typename GET_PROP_TYPE(TypeTag, CellCenterPrimaryVariables);
enum {
turbulentKineticEnergyEqIdx = Indices::turbulentKineticEnergyEqIdx,
dissipationEqIdx = Indices::dissipationEqIdx,
};
static constexpr int turbulentKineticEnergyEqIdx = Indices::turbulentKineticEnergyEqIdx - ModelTraits::dim();
static constexpr int dissipationEqIdx = Indices::dissipationEqIdx - ModelTraits::dim();
public:
......@@ -99,12 +97,12 @@ public:
};
auto upwindTermEpsilon = [](const auto& volVars)
{
return volVars.dissipationTilde();
return volVars.dissipation();
};
flux[turbulentKineticEnergyEqIdx - ModelTraits::dim()]
flux[turbulentKineticEnergyEqIdx]
= ParentType::advectiveFluxForCellCenter(problem, elemVolVars, elemFaceVars, scvf, upwindTermK);
flux[dissipationEqIdx - ModelTraits::dim()]
flux[dissipationEqIdx ]
= ParentType::advectiveFluxForCellCenter(problem, elemVolVars, elemFaceVars, scvf, upwindTermEpsilon);
// calculate diffusive flux
......@@ -114,14 +112,19 @@ public:
const auto& outsideVolVars = elemVolVars[scvf.outsideScvIdx()];
// effective diffusion coefficients
Scalar insideCoeff_k = insideVolVars.kinematicViscosity()
+ insideVolVars.kinematicEddyViscosity() / insideVolVars.sigmaK();
Scalar outsideCoeff_k = outsideVolVars.kinematicViscosity()
+ outsideVolVars.kinematicEddyViscosity() / outsideVolVars.sigmaK();
Scalar insideCoeff_e = insideVolVars.kinematicViscosity()
+ insideVolVars.kinematicEddyViscosity() / insideVolVars.sigmaEpsilon();
Scalar outsideCoeff_e = outsideVolVars.kinematicViscosity()
+ outsideVolVars.kinematicEddyViscosity() / outsideVolVars.sigmaEpsilon();
Scalar insideCoeff_k = insideVolVars.kinematicEddyViscosity() / insideVolVars.sigmaK();
Scalar outsideCoeff_k = outsideVolVars.kinematicEddyViscosity() / outsideVolVars.sigmaK();
Scalar insideCoeff_e = insideVolVars.kinematicEddyViscosity() / insideVolVars.sigmaEpsilon();
Scalar outsideCoeff_e = outsideVolVars.kinematicEddyViscosity() / outsideVolVars.sigmaEpsilon();
static const auto kEpsilonEnableKinematicViscosity_
= getParamFromGroup<bool>(problem.paramGroup(), "KEpsilon.EnableKinematicViscosity_", true);
if (kEpsilonEnableKinematicViscosity_)
{
insideCoeff_k += insideVolVars.kinematicViscosity();
outsideCoeff_k += outsideVolVars.kinematicViscosity();
insideCoeff_e += insideVolVars.kinematicViscosity();
outsideCoeff_e += outsideVolVars.kinematicViscosity();
}
// scale by extrusion factor
insideCoeff_k *= insideVolVars.extrusionFactor();
......@@ -147,20 +150,24 @@ public:
}
const auto bcTypes = problem.boundaryTypes(element, scvf);
if (!(scvf.boundary() && (bcTypes.isOutflow(turbulentKineticEnergyEqIdx)
if (!(scvf.boundary() && (bcTypes.isOutflow(Indices::turbulentKineticEnergyEqIdx)
|| bcTypes.isSymmetry())))
{
flux[turbulentKineticEnergyEqIdx - ModelTraits::dim()]
+= coeff_k / distance
* (insideVolVars.turbulentKineticEnergy() - outsideVolVars.turbulentKineticEnergy())
* scvf.area();
if (!insideVolVars.inNearWallRegion()
|| !insideVolVars.inNearWallRegion())
{
flux[turbulentKineticEnergyEqIdx]
+= coeff_k / distance
* (insideVolVars.turbulentKineticEnergy() - outsideVolVars.turbulentKineticEnergy())
* scvf.area();
}
}
if (!(scvf.boundary() && (bcTypes.isOutflow(dissipationEqIdx)
if (!(scvf.boundary() && (bcTypes.isOutflow(Indices::dissipationEqIdx)
|| bcTypes.isSymmetry())))
{
flux[dissipationEqIdx - ModelTraits::dim()]
flux[dissipationEqIdx]
+= coeff_e / distance
* (insideVolVars.dissipationTilde() - outsideVolVars.dissipationTilde())
* (insideVolVars.dissipation() - outsideVolVars.dissipation())
* scvf.area();
}
return flux;
......
dumux/freeflow/rans/twoeq/kepsilon/staggered/localresidual.hh
View file @ f02f564a
......@@ -44,6 +44,7 @@ class KEpsilonResidualImpl<TypeTag, BaseLocalResidual, DiscretizationMethod::sta
: public BaseLocalResidual
{
using ParentType = BaseLocalResidual;
friend class StaggeredLocalResidual<TypeTag>;
using GridVariables = typename GET_PROP_TYPE(TypeTag, GridVariables);
......@@ -69,9 +70,18 @@ class KEpsilonResidualImpl<TypeTag, BaseLocalResidual, DiscretizationMethod::sta
using BoundaryTypes = typename GET_PROP_TYPE(TypeTag, BoundaryTypes);
using ModelTraits = typename GET_PROP_TYPE(TypeTag, ModelTraits);
using CellCenterResidual = CellCenterPrimaryVariables;
static constexpr int turbulentKineticEnergyEqIdx = Indices::turbulentKineticEnergyEqIdx - ModelTraits::dim();
static constexpr int dissipationEqIdx = Indices::dissipationEqIdx - ModelTraits::dim();
public:
using ParentType::ParentType;
// account for the offset of the cell center privars within the PrimaryVariables container
static constexpr auto cellCenterOffset = ModelTraits::numEq() - CellCenterPrimaryVariables::dimension;
static_assert(cellCenterOffset == ModelTraits::dim(), "cellCenterOffset must equal dim for staggered NavierStokes");
//! Evaluate fluxes entering or leaving the cell center control volume.
CellCenterPrimaryVariables computeStorageForCellCenter(const Problem& problem,
const SubControlVolume& scv,
......@@ -79,10 +89,8 @@ public:
{
CellCenterPrimaryVariables storage = ParentType::computeStorageForCellCenter(problem, scv, volVars);
static constexpr int turbulentKineticEnergyEqIdx = Indices::turbulentKineticEnergyEqIdx - ModelTraits::dim();
static constexpr int dissipationEqIdx = Indices::dissipationEqIdx - ModelTraits::dim();
storage[turbulentKineticEnergyEqIdx] = volVars.turbulentKineticEnergy();
storage[dissipationEqIdx] = volVars.dissipationTilde();
storage[dissipationEqIdx] = volVars.dissipation();
return storage;
}
......@@ -98,30 +106,73 @@ public:
elemVolVars, elemFaceVars, scv);
const auto& volVars = elemVolVars[scv];
static constexpr int turbulentKineticEnergyEqIdx = Indices::turbulentKineticEnergyEqIdx - ModelTraits::dim();
static constexpr int dissipationEqIdx = Indices::dissipationEqIdx - ModelTraits::dim();
unsigned int elementID = problem.fvGridGeometry().elementMapper().index(element);
Scalar turbulentKineticEnergy = volVars.turbulentKineticEnergy();
Scalar dissipation = volVars.dissipation();
// production
source[turbulentKineticEnergyEqIdx] += 2.0 * volVars.kinematicEddyViscosity()
* volVars.stressTensorScalarProduct();
source[dissipationEqIdx] += volVars.cOneEpsilon() * volVars.fOne()
* volVars.dissipationTilde() / volVars.turbulentKineticEnergy()
// turbulence production is equal to dissipation -> exclude both terms (according to local equilibrium hypothesis, see FLUENT)
if (!problem.isMatchingPoint(elementID))
{
source[turbulentKineticEnergyEqIdx] += 2.0 * volVars.kinematicEddyViscosity()
* volVars.stressTensorScalarProduct();
}
source[dissipationEqIdx] += volVars.cOneEpsilon()
* dissipation / turbulentKineticEnergy
* 2.0 * volVars.kinematicEddyViscosity()
* volVars.stressTensorScalarProduct();
// destruction
source[turbulentKineticEnergyEqIdx] -= volVars.dissipationTilde();
source[dissipationEqIdx] -= volVars.cTwoEpsilon() * volVars.fTwo()
* volVars.dissipationTilde() * volVars.dissipationTilde()
/ volVars.turbulentKineticEnergy();
// dampening functions
source[turbulentKineticEnergyEqIdx] -= volVars.dValue();
source[dissipationEqIdx] += volVars.eValue();
// turbulence production is equal to dissipation -> exclude both terms (according to local equilibrium hypothesis, see FLUENT)
if (!problem.isMatchingPoint(elementID))
{
source[turbulentKineticEnergyEqIdx] -= dissipation;
}
source[dissipationEqIdx] -= volVars.cTwoEpsilon()
* dissipation * dissipation
/ turbulentKineticEnergy;
return source;
}
protected:
/*!
* \brief Evaluate boundary conditions for a cell center dof
*/
template<class ElementBoundaryTypes>
void evalBoundaryForCellCenter_(CellCenterResidual& residual,
const Problem& problem,
const Element& element,
const FVElementGeometry& fvGeometry,
const ElementVolumeVariables& elemVolVars,
const ElementFaceVariables& elemFaceVars,
const ElementBoundaryTypes& elemBcTypes,
const ElementFluxVariablesCache& elemFluxVarsCache) const
{
BaseLocalResidual::evalBoundaryForCellCenter_(residual, problem, element, fvGeometry,
elemVolVars, elemFaceVars, elemBcTypes, elemFluxVarsCache);
for (auto&& scvf : scvfs(fvGeometry))
{
unsigned int elementID = problem.fvGridGeometry().elementMapper().index(element);
const auto& insideScv = fvGeometry.scv(scvf.insideScvIdx());
const auto& insideVolVars = elemVolVars[insideScv];
// fixed value for the turbulent kinetic energy
if(problem.inNearWallRegion(elementID) && !problem.isMatchingPoint(elementID))
{
// unsigned int matchingPointID = problem.matchingPointID_[elementID];
residual[Indices::turbulentKineticEnergyEqIdx - cellCenterOffset]
= insideVolVars.turbulentKineticEnergy() - problem.turbulentKineticEnergyWallFunction(elementID);
}
// fixed value for the dissipation
if(problem.inNearWallRegion(elementID))
{
residual[Indices::dissipationEqIdx - cellCenterOffset]
= insideVolVars.dissipation() - problem.dissipationWallFunction(elementID);
}
}
}
};
}
......
dumux/freeflow/rans/twoeq/kepsilon/volumevariables.hh
View file @ f02f564a
......@@ -93,15 +93,21 @@ public:
const SubControlVolume& scv)
{
RANSParentType::updateRANSProperties(elemSol, problem, element, scv);
isMatchingPoint_ = problem.isMatchingPoint(RANSParentType::elementID());
inNearWallRegion_ = problem.inNearWallRegion(RANSParentType::elementID());
turbulentKineticEnergy_ = elemSol[0][Indices::turbulentKineticEnergyIdx];
dissipationTilde_ = elemSol[0][Indices::dissipationIdx];
storedDissipationTilde_ = problem.storedDissipationTilde_[RANSParentType::elementID()];
dissipation_ = elemSol[0][Indices::dissipationIdx];
storedDissipation_ = problem.storedDissipation_[RANSParentType::elementID()];
storedTurbulentKineticEnergy_ = problem.storedTurbulentKineticEnergy_[RANSParentType::elementID()];
stressTensorScalarProduct_ = problem.stressTensorScalarProduct_[RANSParentType::elementID()];
if (problem.useStoredEddyViscosity_)
dynamicEddyViscosity_ = problem.storedDynamicEddyViscosity_[RANSParentType::elementID()];
else
dynamicEddyViscosity_ = calculateEddyViscosity();
if (inNearWallRegion_ && !isMatchingPoint_)
{
dynamicEddyViscosity_ = problem.zeroEqDynamicEddyViscosity_[RANSParentType::elementID()];
}
calculateEddyDiffusivity(problem);
}
......@@ -134,8 +140,8 @@ public:
*/
Scalar calculateEddyViscosity()
{
return cMu() * fMu() * turbulentKineticEnergy() * turbulentKineticEnergy()
/ dissipationTilde() * NavierStokesParentType::density();
return cMu() * turbulentKineticEnergy() * turbulentKineticEnergy()
/ dissipation() * NavierStokesParentType::density();
}
/*!
......@@ -162,9 +168,9 @@ public:
/*!
* \brief Returns an effective dissipation \f$ m^2/s^3 \f$
*/
Scalar dissipationTilde() const
Scalar dissipation() const
{
return dissipationTilde_;
return dissipation_;
}
/*!
......@@ -178,9 +184,9 @@ public:
/*!
* \brief Returns an effective dissipation \f$ m^2/s^3 \f$
*/
Scalar storedDissipationTilde() const
Scalar storedDissipation() const
{
return storedDissipationTilde_;
return storedDissipation_;
}
/*!
......@@ -191,19 +197,20 @@ public:
return stressTensorScalarProduct_;
}
//! \brief Returns the \$f Re_\textrm{T} \$f value
const Scalar reT() const
/*
* \brief Returns if an element is located in the near-wall region
*/
bool inNearWallRegion() const
{
return turbulentKineticEnergy() * turbulentKineticEnergy()
/ RANSParentType::kinematicViscosity() / dissipationTilde();
return inNearWallRegion_;
}
//! \brief Returns the \$f Re_\textrm{y} \$f value
const Scalar reY() const
/*!
* \brief Returns if an element is the matching point
*/
Scalar isMatchingPoint() const
{
using std::sqrt;
return sqrt(turbulentKineticEnergy()) * RANSParentType::wallDistance()
/ RANSParentType::kinematicViscosity();
return isMatchingPoint_;
}
//! \brief Returns the \$f C_\mu \$f constant
......@@ -218,48 +225,13 @@ public:
const Scalar sigmaEpsilon() const
{ return 1.3; }
//! \brief Returns the \$f C_{1\tilde{\varepsilon}} \$f constant
//! \brief Returns the \$f C_{1\varepsilon} \$f constant
const Scalar