From 1dc10fbb7e1548f008b51a3bed71dcacfbd88439 Mon Sep 17 00:00:00 2001
From: Bernd Flemisch <bernd@iws.uni-stuttgart.de>
Date: Tue, 24 Jul 2018 15:32:55 +0200
Subject: [PATCH] [assembly][box] treat ghost elements explicitly
This recovers results from 2.12. However, these results also are wrong.
---
dumux/assembly/boxlocalassembler.hh | 32 ++++++++++++++++++++++++++++-
1 file changed, 31 insertions(+), 1 deletion(-)
diff --git a/dumux/assembly/boxlocalassembler.hh b/dumux/assembly/boxlocalassembler.hh
index ad9baffa0b..c8ebb3d836 100644
--- a/dumux/assembly/boxlocalassembler.hh
+++ b/dumux/assembly/boxlocalassembler.hh
@@ -88,12 +88,42 @@ public:
for (const auto& scv : scvs(this->fvGeometry()))
res[scv.dofIndex()] += residual[scv.localDofIndex()];
}
- else
+ else if (!this->elementIsGhost())
{
const auto residual = this->asImp_().assembleJacobianAndResidualImpl(jac, gridVariables, partialReassembler); // forward to the internal implementation
for (const auto& scv : scvs(this->fvGeometry()))
res[scv.dofIndex()] += residual[scv.localDofIndex()];
}
+ else
+ {
+ using GridGeometry = typename GridVariables::GridGeometry;
+ using GridView = typename GridGeometry::GridView;
+ static constexpr auto dim = GridView::dimension;
+
+ int numVerticesLocal = this->element().subEntities(dim);
+
+ for (int i = 0; i < numVerticesLocal; ++i) {
+ auto vertex = this->element().template subEntity<dim>(i);
+
+ if (vertex.partitionType() == Dune::InteriorEntity ||
+ vertex.partitionType() == Dune::BorderEntity)
+ {
+ // do not change the non-ghost vertices
+ continue;
+ }
+
+ // set main diagonal entries for the vertex
+ int vIdx = this->assembler().fvGridGeometry().vertexMapper().index(vertex);
+
+ typedef typename JacobianMatrix::block_type BlockType;
+ BlockType &J = jac[vIdx][vIdx];
+ for (int j = 0; j < BlockType::rows; ++j)
+ J[j][j] = 1.0;
+
+ // set residual for the vertex
+ res[vIdx] = 0;
+ }
+ }
auto applyDirichlet = [&] (const auto& scvI,
const auto& dirichletValues,
--
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