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Implement addWellContributions() for MultisegmentWell.

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Atgeirr Flø Rasmussen 2020-10-29 12:57:29 +01:00
parent 963a8b640a
commit 82ecb1e7cd
1 changed files with 29 additions and 2 deletions
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31
opm/simulators/wells/MultisegmentWell_impl.hpp
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@ -619,6 +619,11 @@ namespace Opm
MultisegmentWell<TypeTag>::
apply(const BVector& x, BVector& Ax) const
{
if ( param_.matrix_add_well_contributions_ )
{
// Contributions are already in the matrix itself
return;
}
BVectorWell Bx(duneB_.N());
duneB_.mv(x, Bx);
@ -1174,9 +1179,31 @@ namespace Opm
template<typename TypeTag>
void
MultisegmentWell<TypeTag>::
addWellContributions(SparseMatrixAdapter& /* jacobian */) const
addWellContributions(SparseMatrixAdapter& jacobian) const
{
OPM_THROW(std::runtime_error, "addWellContributions is not supported by multisegment well yet");
const auto invDuneD = mswellhelpers::invertWithUMFPack<DiagMatWell, BVectorWell>(duneD_, duneDSolver_);
// We need to change matrix A as follows
// A -= C^T D^-1 B
// D is a (nseg x nseg) block matrix with (4 x 4) blocks.
// B and C are (nseg x ncells) block matrices with (4 x 4 blocks).
// They have nonzeros at (i, j) only if this well has a
// perforation at cell j connected to segment i.
for (int rowC = 0; rowC < duneC_.N(); ++rowC) {
for (auto colC = duneC_[rowC].begin(), endC = duneC_[rowC].end(); colC != endC; ++colC) {
const auto row_index = colC.index();
for (int rowB = 0; rowB < duneB_.N(); ++rowB) {
for (auto colB = duneB_[rowB].begin(), endB = duneB_[rowB].end(); colB != endB; ++colB) {
const auto col_index = colB.index();
OffDiagMatrixBlockWellType tmp1;
Detail::multMatrixImpl(invDuneD[rowC][rowB], (*colB), tmp1, std::true_type());
typename SparseMatrixAdapter::MatrixBlock tmp2;
Detail::multMatrixTransposedImpl((*colC), tmp1, tmp2, std::false_type());
jacobian.addToBlock(row_index, col_index, tmp2);
}
}
}
}
}