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blackoil, ebos: implement non-trivial boundary conditions

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with this, it is possible do define fluxes of conservation quantities
over the domain boundaries by specifying the thermodynamic state on
the boundary when using the black-oil model. The main motivation is
are thermal fluxes which are required to maintain geothermal
temperature gradients over time.
This commit is contained in:
Andreas Lauser
2018-01-30 11:46:23 +01:00
parent 815be1451b
commit 54c96aa1c2
4 changed files with 211 additions and 24 deletions
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78
ebos/ecltransmissibility.hh
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@@ -162,10 +162,14 @@ public:
trans_.clear();
trans_.reserve(numElements*3*1.05);
transBoundary_.clear();
// if energy is enabled, let's do the same for the "thermal half transmissibilities"
if (enableEnergy) {
thermalHalfTrans_->clear();
thermalHalfTrans_->reserve(numElements*3*1.05);
thermalHalfTransBoundary_.clear();
}
// compute the transmissibilities for all intersections
@@ -176,13 +180,54 @@ public:
auto isIt = gridView.ibegin(elem);
const auto& isEndIt = gridView.iend(elem);
unsigned boundaryIsIdx = 0;
for (; isIt != isEndIt; ++ isIt) {
// store intersection, this might be costly
const auto& intersection = *isIt;
// ignore boundary intersections for now (TODO?)
if (!intersection.neighbor())
// deal with grid boundaries
if (!intersection.neighbor()) {
// compute the transmissibilty for the boundary intersection
const auto& geometry = intersection.geometry();
const auto& faceCenterInside = geometry.center();
auto faceAreaNormal = intersection.centerUnitOuterNormal();
faceAreaNormal *= geometry.volume();
Scalar transBoundaryIs;
computeHalfTrans_(transBoundaryIs,
faceAreaNormal,
intersection.indexInInside(),
distanceVector_(faceCenterInside,
intersection.indexInInside(),
elemIdx,
axisCentroids),
permeability_[elemIdx]);
// normally there would be two half-transmissibilities that would be
// averaged. on the grid boundary there only is the half
// transmissibility of the interior element.
transBoundary_[std::make_pair(elemIdx, boundaryIsIdx)] = transBoundaryIs;
// for boundary intersections we also need to compute the thermal
// half transmissibilities
if (enableEnergy) {
const auto& n = intersection.centerUnitOuterNormal();
Scalar A = intersection.geometry().volume();
const auto& inPos = elem.geometry().center();
const auto& outPos = intersection.geometry().center();
const auto& d = outPos - inPos;
Scalar thermalHalfTrans =
A * std::abs(n*d)/(d*d);
thermalHalfTransBoundary_[std::make_pair(elemIdx, boundaryIsIdx)] = thermalHalfTrans;
}
++ boundaryIsIdx;
continue;
}
const auto& outsideElem = intersection.outside();
unsigned outsideElemIdx = elemMapper.index(outsideElem);
@@ -217,10 +262,16 @@ public:
DimVector faceCenterOutside;
DimVector faceAreaNormal;
typename std::is_same< Grid, Dune::CpGrid> :: type isCpGrid;
computeFaceProperties( intersection, elemIdx, insideFaceIdx, outsideElemIdx, outsideFaceIdx,
faceCenterInside, faceCenterOutside, faceAreaNormal,
isCpGrid );
typename std::is_same<Grid, Dune::CpGrid>::type isCpGrid;
computeFaceProperties(intersection,
elemIdx,
insideFaceIdx,
outsideElemIdx,
outsideFaceIdx,
faceCenterInside,
faceCenterOutside,
faceAreaNormal,
isCpGrid);
Scalar halfTrans1;
Scalar halfTrans2;
@@ -303,6 +354,12 @@ public:
Scalar transmissibility(unsigned elemIdx1, unsigned elemIdx2) const
{ return trans_.at(isId_(elemIdx1, elemIdx2)); }
/*!
* \brief Return the transmissibility for a given boundary segment.
*/
Scalar transmissibilityBoundary(unsigned elemIdx, unsigned boundaryFaceIdx) const
{ return transBoundary_.at(std::make_pair(elemIdx, boundaryFaceIdx)); }
/*!
* \brief Return the thermal "half transmissibility" for the intersection between two
* elements.
@@ -320,6 +377,9 @@ public:
Scalar thermalHalfTrans(unsigned insideElemIdx, unsigned outsideElemIdx) const
{ return thermalHalfTrans_->at(isId_(insideElemIdx, outsideElemIdx)); }
Scalar thermalHalfTransBoundary(unsigned insideElemIdx, unsigned boundaryFaceIdx) const
{ return thermalHalfTransBoundary_.at(std::make_pair(insideElemIdx, boundaryFaceIdx)); }
private:
template <class Intersection>
void computeFaceProperties( const Intersection& intersection,
@@ -330,7 +390,7 @@ private:
DimVector& faceCenterInside,
DimVector& faceCenterOutside,
DimVector& faceAreaNormal,
std::false_type ) const
/*isCpGrid=*/std::false_type) const
{
// default implementation for DUNE grids
const auto& geometry = intersection.geometry();
@@ -350,7 +410,7 @@ private:
DimVector& faceCenterInside,
DimVector& faceCenterOutside,
DimVector& faceAreaNormal,
std::true_type ) const
/*isCpGrid=*/std::true_type) const
{
int faceIdx = intersection.id();
faceCenterInside = vanguard_.grid().faceCenterEcl(insideElemIdx,insideFaceIdx);
@@ -537,6 +597,8 @@ private:
const Vanguard& vanguard_;
std::vector<DimMatrix> permeability_;
std::unordered_map<std::uint64_t, Scalar> trans_;
std::map<std::pair<unsigned, unsigned>, Scalar> transBoundary_;
std::map<std::pair<unsigned, unsigned>, Scalar> thermalHalfTransBoundary_;
Opm::ConditionalStorage<enableEnergy,
std::unordered_map<std::uint64_t, Scalar> > thermalHalfTrans_;
};