12#ifndef DUMUX_ZEROEQ_PROBLEM_HH
13#define DUMUX_ZEROEQ_PROBLEM_HH
17#include <dune/common/math.hh>
18#include <dune/common/stdstreams.hh>
39template<
class TypeTag>
45 using Grid =
typename GridView::Grid;
50 using SubControlVolumeFace =
typename FVElementGeometry::SubControlVolumeFace;
57 dim = Grid::dimension,
59 using DimVector = Dune::FieldVector<Scalar, dim>;
60 using DimMatrix = Dune::FieldMatrix<Scalar, dim, dim>;
79 DUNE_THROW(Dune::NotImplemented,
"\n Due to grid/geometric concerns, zero-eq models should only be used for flat channel geometries. "
80 <<
"\n If your geometry is a flat channel, please set the runtime parameter RANS.IsFlatWallBounded to true. \n");
86 kinematicEddyViscosity_.resize(this->
gridGeometry().elementMapper().size(), 0.0);
87 additionalRoughnessLength_.resize(this->
gridGeometry().elementMapper().size(), 0.0);
97 template<
class SolutionVector>
103 if (
hasParam(
"RANS.SandGrainRoughness"))
104 calculateRoughnessLength_(curSol);
116 std::vector<Scalar> kinematicEddyViscosityInner(this->
gridGeometry().elementMapper().size(), 0.0);
117 std::vector<Scalar> kinematicEddyViscosityOuter(this->
gridGeometry().elementMapper().size(), 0.0);
118 std::vector<Scalar> kinematicEddyViscosityDifference(this->
gridGeometry().elementMapper().size(), 0.0);
119 std::vector<Scalar> switchingPosition(this->
gridGeometry().elementMapper().size(), std::numeric_limits<Scalar>::max());
126 const Scalar aPlus = 26.0;
127 const Scalar k = 0.0168;
128 const Scalar cCP = 1.6;
129 const Scalar cWake = 0.25;
130 const Scalar cKleb = 0.3;
132 std::vector<Scalar> storedFMax;
133 std::vector<Scalar> storedYFMax;
134 storedFMax.resize(this->
gridGeometry().elementMapper().size(), 0.0);
135 storedYFMax.resize(this->
gridGeometry().elementMapper().size(), 0.0);
138 for (
const auto& element : elements(this->
gridGeometry().gridView()))
140 unsigned int elementIdx = this->
gridGeometry().elementMapper().index(element);
150 Scalar mixingLength = this->
karmanConstant() * effectiveWallDistance * (1.0 - exp(-yPlus / aPlus));
151 kinematicEddyViscosityInner[elementIdx] = mixingLength * mixingLength * omegaAbs;
153 Scalar f = effectiveWallDistance * omegaAbs * (1.0 - exp(-yPlus / aPlus));
156 storedFMax[asImp_().wallElementIndex(elementIdx)] = f;
157 storedYFMax[asImp_().wallElementIndex(elementIdx)] = effectiveWallDistance;
162 for (
const auto& element : elements(this->
gridGeometry().gridView()))
164 unsigned int elementIdx = this->
gridGeometry().elementMapper().index(element);
167 Scalar maxVelocityNorm = 0.0;
168 Scalar minVelocityNorm = 0.0;
169 for (
unsigned axisIdx = 0; axisIdx < dim; ++axisIdx)
171 maxVelocityNorm += asImp_().velocityMaximum(asImp_().
wallElementIndex(elementIdx))[axisIdx]
173 minVelocityNorm += asImp_().velocityMinimum(asImp_().
wallElementIndex(elementIdx))[axisIdx]
177 Scalar deltaU = sqrt(maxVelocityNorm) - sqrt(minVelocityNorm);
178 Scalar yFMax = storedYFMax[asImp_().wallElementIndex(elementIdx)];
179 Scalar fMax = storedFMax[asImp_().wallElementIndex(elementIdx)];
180 Scalar fWake = min(yFMax * fMax, cWake * yFMax * deltaU * deltaU / fMax);
181 Scalar fKleb = 1.0 / (1.0 + 5.5 * power(cKleb * effectiveWallDistance / yFMax, 6));
182 kinematicEddyViscosityOuter[elementIdx] = k * cCP * fWake * fKleb;
184 kinematicEddyViscosityDifference[elementIdx]
185 = kinematicEddyViscosityInner[elementIdx] - kinematicEddyViscosityOuter[elementIdx];
189 for (
const auto& element : elements(this->
gridGeometry().gridView()))
191 unsigned int elementIdx = this->
gridGeometry().elementMapper().index(element);
195 Scalar check = kinematicEddyViscosityDifference[asImp_().wallElementIndex(elementIdx)] * kinematicEddyViscosityDifference[elementIdx];
197 && switchingPosition[asImp_().
wallElementIndex(elementIdx)] > effectiveWallDistance)
199 switchingPosition[asImp_().wallElementIndex(elementIdx)] = effectiveWallDistance;
204 for (
const auto& element : elements(this->
gridGeometry().gridView()))
206 unsigned int elementIdx = this->
gridGeometry().elementMapper().index(element);
209 kinematicEddyViscosity_[elementIdx] = kinematicEddyViscosityInner[elementIdx];
210 if (effectiveWallDistance >= switchingPosition[asImp_().
wallElementIndex(elementIdx)])
212 kinematicEddyViscosity_[elementIdx] = kinematicEddyViscosityOuter[elementIdx];
224 {
return additionalRoughnessLength_[elementIdx]; }
227 {
return kinematicEddyViscosity_[elementIdx]; }
231 template<
class SolutionVector>
232 void calculateRoughnessLength_(
const SolutionVector& curSol)
234 bool printedRangeWarning =
false;
235 auto fvGeometry =
localView(this->gridGeometry());
236 for (
const auto& element : elements(this->gridGeometry().gridView()))
239 unsigned int elementIdx = this->gridGeometry().elementMapper().index(element);
240 fvGeometry.bindElement(element);
242 for (
auto&& scv : scvs(fvGeometry))
247 const int dofIdx = scv.dofIndex();
250 const auto& cellCenterPriVars = curSol[GridGeometry::cellCenterIdx()][dofIdx];
254 VolumeVariables volVars;
255 volVars.update(elemSol, asImp_(), element, scv);
257 Scalar ksPlus = sandGrainRoughness * volVars.uStar() / volVars.kinematicViscosity();
258 if (ksPlus > 0 && eddyViscosityModel().compare(
"baldwinLomax") == 0)
260 DUNE_THROW(Dune::NotImplemented,
"Roughness is not implemented for the Baldwin-Lomax model.");
264 std::cout <<
"info: equivalent sand grain roughness ks+=" << ksPlus <<
" at " << asImp_().cellCenter(asImp_().wallElementIndex(elementIdx))
265 <<
" is not in the valid range (ksPlus < 2000),"
266 <<
" for high ksPlus values the roughness function reaches a turning point."<< std::endl;
267 DUNE_THROW(Dune::InvalidStateException,
"Unphysical roughness behavior.");
269 else if (ksPlus > 0.0 && ksPlus < 4.535 && !printedRangeWarning)
271 Dune::dinfo <<
"info: equivalent sand grain roughness ks+=" << ksPlus <<
" at " << asImp_().cellCenter(asImp_().wallElementIndex(elementIdx))
272 <<
" is not in the valid range (ksPlus > 4.535) and now set to 0.0"<< std::endl;
274 printedRangeWarning =
true;
276 additionalRoughnessLength_[elementIdx] = 0.9 / (volVars.uStar() / volVars.kinematicViscosity())
277 * (sqrt(ksPlus) - ksPlus * exp(-ksPlus / 6.0));
282 std::vector<Scalar> additionalRoughnessLength_;
283 std::vector<Scalar> kinematicEddyViscosity_;
286 Implementation &asImp_()
287 {
return *
static_cast<Implementation *
>(
this); }
290 const Implementation &asImp_()
const
291 {
return *
static_cast<const Implementation *
>(
this); }
const std::string & paramGroup() const
The parameter group in which to retrieve runtime parameters.
Definition common/fvproblem.hh:524
const GridGeometry & gridGeometry() const
The finite volume grid geometry.
Definition common/fvproblem.hh:520
unsigned int wallElementIndex(const int elementIdx) const
Definition freeflow/rans/problem.hh:242
int flowDirectionAxis(const int elementIdx) const
Definition freeflow/rans/problem.hh:232
void updateDynamicWallProperties(const SolutionVector &curSol)
Update the dynamic (solution dependent) turbulence parameters.
Definition freeflow/rans/problem.hh:131
void updateStaticWallProperties()
Update the static (solution independent) relations to the walls and neighbors.
Definition freeflow/rans/problem.hh:115
Scalar velocityGradient(const int elementIdx, const int i, const int j) const
Definition freeflow/rans/problem.hh:280
Scalar kinematicViscosity(const int elementIdx) const
Definition freeflow/rans/problem.hh:295
int wallNormalAxis(const int elementIdx) const
Definition freeflow/rans/problem.hh:222
RANSProblemBase(std::shared_ptr< const GridGeometry > gridGeometry, const std::string ¶mGroup="")
The constructor.
Definition freeflow/rans/problem.hh:90
bool isFlatWallBounded() const
Returns whether a given sub control volume face is on a wall.
Definition freeflow/rans/problem.hh:184
const Scalar karmanConstant() const
Returns the Karman constant.
Definition freeflow/rans/problem.hh:193
void updateDynamicWallProperties(const SolutionVector &curSol)
Update the dynamic (solution dependent) relations to the walls.
Definition freeflow/rans/zeroeq/problem.hh:98
RANSProblemImpl(std::shared_ptr< const GridGeometry > gridGeometry, const std::string ¶mGroup="")
The constructor.
Definition freeflow/rans/zeroeq/problem.hh:68
void updateStaticWallProperties()
Correct size of the static (solution independent) wall variables.
Definition freeflow/rans/zeroeq/problem.hh:75
int additionalRoughnessLength(const int elementIdx) const
Definition freeflow/rans/zeroeq/problem.hh:223
Scalar kinematicEddyViscosity(const int elementIdx) const
Definition freeflow/rans/zeroeq/problem.hh:226
std::string eddyViscosityModel() const
Definition freeflow/rans/zeroeq/problem.hh:217
void updateBaldwinLomaxProperties()
Update the relations and coefficients for the Baldwin-Lomax turbulence model.
Definition freeflow/rans/zeroeq/problem.hh:114
Defines all properties used in Dumux.
the turbulence-model-specfic RANS problem
A single-phase, isothermal Reynolds-Averaged Navier-Stokes 0-Eq. model.
GridCache::LocalView localView(const GridCache &gridCache)
Free function to get the local view of a grid cache object.
Definition localview.hh:26
auto elementSolution(const Element &element, const SolutionVector &sol, const GridGeometry &gg) -> std::enable_if_t< GridGeometry::discMethod==DiscretizationMethods::cctpfa||GridGeometry::discMethod==DiscretizationMethods::ccmpfa, CCElementSolution< typename GridGeometry::LocalView, std::decay_t< decltype(std::declval< SolutionVector >()[0])> > >
Make an element solution for cell-centered schemes.
Definition cellcentered/elementsolution.hh:101
TurbulenceModel
The available free flow turbulence models in Dumux.
Definition turbulencemodel.hh:26
@ zeroeq
Definition turbulencemodel.hh:27
T getParamFromGroup(Args &&... args)
A free function to get a parameter from the parameter tree singleton with a model group.
Definition parameters.hh:149
bool hasParam(const std::string ¶m)
Check whether a key exists in the parameter tree.
Definition parameters.hh:157
typename GetProp< TypeTag, Property >::type GetPropType
get the type alias defined in the property
Definition propertysystem.hh:296
PrimaryVariables makePriVarsFromCellCenterPriVars(const CellCenterPrimaryVariables &cellCenterPriVars)
Helper function to create a PrimaryVariables object from CellCenterPrimaryVariables.
Definition staggered/elementsolution.hh:29
Free function to get the local view of a grid cache object.
The available discretization methods in Dumux.
The local element solution class for staggered methods.
Base class for all staggered fv problems.
The available free flow turbulence models in Dumux.