GCC Code Coverage Report


Directory: ../../../builds/dumux-repositories/
File: /builds/dumux-repositories/dumux/dumux/multidomain/embedded/couplingmanager1d3d_surface.hh
Date: 2024-05-04 19:09:25
Exec Total Coverage
Lines: 98 106 92.5%
Functions: 6 12 50.0%
Branches: 148 280 52.9%

Line Branch Exec Source
1 // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 // vi: set et ts=4 sw=4 sts=4:
3 //
4 // SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
5 // SPDX-License-Identifier: GPL-3.0-or-later
6 //
7 /*!
8 * \file
9 * \ingroup EmbeddedCoupling
10 * \brief Coupling manager for low-dimensional domains embedded in the bulk domain.
11 */
12
13 #ifndef DUMUX_MULTIDOMAIN_EMBEDDED_COUPLINGMANAGER_1D3D_SURFACE_HH
14 #define DUMUX_MULTIDOMAIN_EMBEDDED_COUPLINGMANAGER_1D3D_SURFACE_HH
15
16 #include <vector>
17
18 #include <dune/common/timer.hh>
19 #include <dune/geometry/quadraturerules.hh>
20
21 #include <dumux/common/tag.hh>
22 #include <dumux/common/properties.hh>
23 #include <dumux/common/indextraits.hh>
24
25 #include <dumux/multidomain/embedded/couplingmanagerbase.hh>
26 #include <dumux/multidomain/embedded/circlepoints.hh>
27 #include <dumux/multidomain/embedded/circleaveragepointsourcetraits.hh>
28 #include <dumux/multidomain/embedded/extendedsourcestencil.hh>
29
30 namespace Dumux {
31
32 namespace Embedded1d3dCouplingMode {
33 struct Surface : public Utility::Tag<Surface> {
34 static std::string name() { return "surface"; }
35 };
36
37 inline constexpr Surface surface{};
38 } // end namespace Embedded1d3dCouplingMode
39
40 // forward declaration
41 template<class MDTraits, class CouplingMode>
42 class Embedded1d3dCouplingManager;
43
44 /*!
45 * \ingroup EmbeddedCoupling
46 * \brief Manages the coupling between bulk elements and lower dimensional elements
47 * Point sources on each integration point are computed by an AABB tree.
48 * \note Specialization for coupling method using cylinder sources with 3d quantities evaluated on the cylinder surface
49 * \note the cylinder source is approximated by point sources on the cylinder surface
50 */
51 template<class MDTraits>
52 class Embedded1d3dCouplingManager<MDTraits, Embedded1d3dCouplingMode::Surface>
53 : public EmbeddedCouplingManagerBase<MDTraits, Embedded1d3dCouplingManager<MDTraits, Embedded1d3dCouplingMode::Surface>,
54 CircleAveragePointSourceTraits<MDTraits>>
55 {
56 using ThisType = Embedded1d3dCouplingManager<MDTraits, Embedded1d3dCouplingMode::Surface>;
57 using ParentType = EmbeddedCouplingManagerBase<MDTraits, ThisType, CircleAveragePointSourceTraits<MDTraits>>;
58 using Scalar = typename MDTraits::Scalar;
59 using SolutionVector = typename MDTraits::SolutionVector;
60 using PointSourceData = typename ParentType::PointSourceTraits::PointSourceData;
61
62 static constexpr auto bulkIdx = typename MDTraits::template SubDomain<0>::Index();
63 static constexpr auto lowDimIdx = typename MDTraits::template SubDomain<1>::Index();
64
65 // the sub domain type aliases
66 template<std::size_t id> using SubDomainTypeTag = typename MDTraits::template SubDomain<id>::TypeTag;
67 template<std::size_t id> using Problem = GetPropType<SubDomainTypeTag<id>, Properties::Problem>;
68 template<std::size_t id> using GridGeometry = GetPropType<SubDomainTypeTag<id>, Properties::GridGeometry>;
69 template<std::size_t id> using GridView = typename GridGeometry<id>::GridView;
70 template<std::size_t id> using Element = typename GridView<id>::template Codim<0>::Entity;
71 template<std::size_t id> using GridIndex = typename IndexTraits<GridView<id>>::GridIndex;
72
73 using GlobalPosition = typename Element<bulkIdx>::Geometry::GlobalCoordinate;
74
75 template<std::size_t id>
76 static constexpr bool isBox()
77 { return GridGeometry<id>::discMethod == DiscretizationMethods::box; }
78
79 enum {
80 bulkDim = GridView<bulkIdx>::dimension,
81 lowDimDim = GridView<lowDimIdx>::dimension,
82 dimWorld = GridView<bulkIdx>::dimensionworld
83 };
84 public:
85 static constexpr Embedded1d3dCouplingMode::Surface couplingMode{};
86
87
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5 using ParentType::ParentType;
88
89 5 void init(std::shared_ptr<Problem<bulkIdx>> bulkProblem,
90 std::shared_ptr<Problem<lowDimIdx>> lowDimProblem,
91 const SolutionVector& curSol)
92 {
93
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10 ParentType::init(bulkProblem, lowDimProblem, curSol);
94 5 computeLowDimVolumeFractions();
95 5 }
96
97 /*!
98 * \brief extend the jacobian pattern of the diagonal block of domain i
99 * by those entries that are not already in the uncoupled pattern
100 * \note Such additional dependencies can arise from the coupling, e.g. if a coupling source
101 * term depends on a non-local average of a quantity of the same domain
102 */
103 template<std::size_t id, class JacobianPattern>
104 void extendJacobianPattern(Dune::index_constant<id> domainI, JacobianPattern& pattern) const
105 {
106 extendedSourceStencil_.extendJacobianPattern(*this, domainI, pattern);
107 }
108
109 /*!
110 * \brief evaluate additional derivatives of the element residual of a domain with respect
111 * to dofs in the same domain that are not in the regular stencil (per default this is not the case)
112 * \note Such additional dependencies can arise from the coupling, e.g. if a coupling source
113 * term depends on a non-local average of a quantity of the same domain
114 * \note This is the same for box and cc
115 */
116 template<std::size_t i, class LocalAssemblerI, class JacobianMatrixDiagBlock, class GridVariables>
117 void evalAdditionalDomainDerivatives(Dune::index_constant<i> domainI,
118 const LocalAssemblerI& localAssemblerI,
119 const typename LocalAssemblerI::LocalResidual::ElementResidualVector&,
120 JacobianMatrixDiagBlock& A,
121 GridVariables& gridVariables)
122 {
123 300595 extendedSourceStencil_.evalAdditionalDomainDerivatives(*this, domainI, localAssemblerI, A, gridVariables);
124 }
125
126 /* \brief Compute integration point point sources and associated data
127 *
128 * This method uses grid glue to intersect the given grids. Over each intersection
129 * we later need to integrate a source term. This method places point sources
130 * at each quadrature point and provides the point source with the necessary
131 * information to compute integrals (quadrature weight and integration element)
132 * \param order The order of the quadrature rule for integration of sources over an intersection
133 * \param verbose If the point source computation is verbose
134 */
135 5 void computePointSourceData(std::size_t order = 1, bool verbose = false)
136 {
137 // if we use the circle average as the 3D values or a point evaluation
138
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5 static const bool useCircleAverage = getParam<bool>("MixedDimension.UseCircleAverage", true);
139
140 // Initialize the bulk bounding box tree
141
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5 const auto& bulkGridGeometry = this->problem(bulkIdx).gridGeometry();
142
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5 const auto& lowDimGridGeometry = this->problem(lowDimIdx).gridGeometry();
143 5 const auto& bulkTree = bulkGridGeometry.boundingBoxTree();
144
145 // initialize the maps
146 // do some logging and profiling
147 5 Dune::Timer watch;
148 10 std::cout << "Initializing the point sources..." << std::endl;
149
150 // clear all internal members like pointsource vectors and stencils
151 // initializes the point source id counter
152 5 this->clear();
153 10 extendedSourceStencil_.stencil().clear();
154
155 // precompute the vertex indices for efficiency
156 5 this->precomputeVertexIndices(bulkIdx);
157 5 this->precomputeVertexIndices(lowDimIdx);
158
159 // intersect the bounding box trees
160 5 this->glueGrids();
161
162 // iterate over all intersection and add point sources
163
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5 const auto& lowDimProblem = this->problem(lowDimIdx);
164
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110 for (const auto& is : intersections(this->glue()))
165 {
166 // all inside elements are identical...
167 95 const auto& lowDimElement = is.targetEntity(0);
168 190 const auto lowDimElementIdx = lowDimGridGeometry.elementMapper().index(lowDimElement);
169
170 // get the intersection geometry
171 95 const auto intersectionGeometry = is.geometry();
172 // get the Gaussian quadrature rule for the local intersection
173 95 const auto& quad = Dune::QuadratureRules<Scalar, lowDimDim>::rule(intersectionGeometry.type(), order);
174
175 // apply the Gaussian quadrature rule and define point sources at each quadrature point
176 // note that the approximation is not optimal if
177 // (a) the one-dimensional elements are too large,
178 // (b) whenever a one-dimensional element is split between two or more elements,
179 // (c) when gradients of important quantities in the three-dimensional domain are large.
180
181 // iterate over all quadrature points
182
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475 for (auto&& qp : quad)
183 {
184 // global position of the quadrature point
185 380 const auto globalPos = intersectionGeometry.global(qp.position());
186
187
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380 const auto bulkElementIndices = intersectingEntities(globalPos, bulkTree);
188
189 // do not add a point source if the qp is outside of the 3d grid
190 // this is equivalent to having a source of zero for that qp
191
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380 if (bulkElementIndices.empty())
192 continue;
193
194 ////////////////////////////////////////////////////////////////
195 // get points on the cylinder surface at the integration point
196 ////////////////////////////////////////////////////////////////
197
198
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190 static const auto numIp = getParam<int>("MixedDimension.NumCircleSegments");
199 190 const auto radius = lowDimProblem.spatialParams().radius(lowDimElementIdx);
200 570 const auto normal = intersectionGeometry.corner(1)-intersectionGeometry.corner(0);
201
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190 const auto integrationElement = intersectionGeometry.integrationElement(qp.position())*2*M_PI*radius/Scalar(numIp);
202 190 const auto qpweight = qp.weight()/(2*M_PI*radius);
203 190 const auto circleAvgWeight = 2*M_PI*radius/numIp;
204
205
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380 const auto circlePoints = EmbeddedCoupling::circlePoints(globalPos, normal, radius, numIp);
206
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760 std::vector<std::vector<std::size_t>> circleBulkElementIndices(circlePoints.size());
207
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760 std::vector<Scalar> circleIpWeight; circleIpWeight.reserve(circlePoints.size());
208
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760 std::vector<GridIndex<bulkIdx>> circleStencil; circleStencil.reserve(circlePoints.size());
209 // for box
210
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380 std::vector<const std::vector<GridIndex<bulkIdx>>*> circleCornerIndices;
211 using ShapeValues = std::vector<Dune::FieldVector<Scalar, 1> >;
212
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380 std::vector<ShapeValues> circleShapeValues;
213
214 // go over all points of the average operator
215
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48830 for (int k = 0; k < circlePoints.size(); ++k)
216 {
217
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97280 circleBulkElementIndices[k] = intersectingEntities(circlePoints[k], bulkTree);
218
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145920 if (circleBulkElementIndices[k].empty())
219 continue;
220
221 48640 const auto localCircleAvgWeight = circleAvgWeight / circleBulkElementIndices[k].size();
222
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194560 for (const auto bulkElementIdx : circleBulkElementIndices[k])
223 {
224
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48640 circleStencil.push_back(bulkElementIdx);
225
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48640 circleIpWeight.push_back(localCircleAvgWeight);
226
227 // precompute interpolation data for box scheme for each cut bulk element
228 if constexpr (isBox<bulkIdx>())
229 {
230 const auto bulkElement = bulkGridGeometry.element(bulkElementIdx);
231 circleCornerIndices.push_back(&(this->vertexIndices(bulkIdx, bulkElementIdx)));
232
233 // evaluate shape functions at the integration point
234 const auto bulkGeometry = bulkElement.geometry();
235 ShapeValues shapeValues;
236 this->getShapeValues(bulkIdx, bulkGridGeometry, bulkGeometry, circlePoints[k], shapeValues);
237 circleShapeValues.emplace_back(std::move(shapeValues));
238 }
239 }
240 }
241
242 // export low dim circle stencil
243 if constexpr (isBox<bulkIdx>())
244 {
245 // we insert all vertices and make it unique later
246 for (const auto& vertices : circleCornerIndices)
247 {
248 this->couplingStencils(lowDimIdx)[lowDimElementIdx].insert(this->couplingStencils(lowDimIdx)[lowDimElementIdx].end(),
249 vertices->begin(), vertices->end());
250
251 }
252 }
253 else
254 {
255
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380 this->couplingStencils(lowDimIdx)[lowDimElementIdx].insert(this->couplingStencils(lowDimIdx)[lowDimElementIdx].end(),
256 circleStencil.begin(), circleStencil.end());
257 }
258
259
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48830 for (int k = 0; k < circlePoints.size(); ++k)
260 {
261
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48640 const auto& circlePos = circlePoints[k];
262
263 // find bulk elements intersection with the circle elements
264
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145920 if (circleBulkElementIndices[k].empty())
265 continue;
266
267 // loop over the bulk elements at the integration points (usually one except when it is on a face or edge or vertex)
268 // and add a point source at every point on the circle
269
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145920 for (const auto bulkElementIdx : circleBulkElementIndices[k])
270 {
271 48640 const auto id = this->idCounter_++;
272
273
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97280 this->pointSources(bulkIdx).emplace_back(circlePos, id, qpweight, integrationElement, bulkElementIdx);
274
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243200 this->pointSources(bulkIdx).back().setEmbeddings(circleBulkElementIndices[k].size());
275
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97280 this->pointSources(lowDimIdx).emplace_back(globalPos, id, qpweight, integrationElement, lowDimElementIdx);
276
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243200 this->pointSources(lowDimIdx).back().setEmbeddings(circleBulkElementIndices[k].size());
277
278 // pre compute additional data used for the evaluation of
279 // the actual solution dependent source term
280
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97280 PointSourceData psData;
281
282 if constexpr (isBox<lowDimIdx>())
283 {
284 using ShapeValues = std::vector<Dune::FieldVector<Scalar, 1> >;
285 ShapeValues shapeValues;
286 this->getShapeValues(lowDimIdx, lowDimGridGeometry, intersectionGeometry, globalPos, shapeValues);
287 psData.addLowDimInterpolation(shapeValues, this->vertexIndices(lowDimIdx, lowDimElementIdx), lowDimElementIdx);
288 }
289 else
290 {
291
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48640 psData.addLowDimInterpolation(lowDimElementIdx);
292 }
293
294 // add data needed to compute integral over the circle
295 if constexpr (isBox<bulkIdx>())
296 {
297 if (useCircleAverage)
298 psData.addCircleInterpolation(circleCornerIndices, circleShapeValues, circleIpWeight, circleStencil);
299
300 using ShapeValues = std::vector<Dune::FieldVector<Scalar, 1> >;
301 const auto bulkGeometry = bulkGridGeometry.element(bulkElementIdx).geometry();
302 ShapeValues shapeValues;
303 this->getShapeValues(bulkIdx, bulkGridGeometry, bulkGeometry, circlePos, shapeValues);
304 psData.addBulkInterpolation(shapeValues, this->vertexIndices(bulkIdx, bulkElementIdx), bulkElementIdx);
305 }
306 else
307 {
308
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48640 if (useCircleAverage)
309
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48640 psData.addCircleInterpolation(circleIpWeight, circleStencil);
310
311
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48640 psData.addBulkInterpolation(bulkElementIdx);
312 }
313
314 // publish point source data in the global vector
315
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97280 this->pointSourceData().emplace_back(std::move(psData));
316
317 // export the bulk coupling stencil
318 // we insert all vertices / elements and make it unique later
319 if constexpr (isBox<lowDimIdx>())
320 {
321 const auto& vertices = this->vertexIndices(lowDimIdx, lowDimElementIdx);
322 this->couplingStencils(bulkIdx)[bulkElementIdx].insert(this->couplingStencils(bulkIdx)[bulkElementIdx].end(),
323 vertices.begin(), vertices.end());
324
325 }
326 else
327 {
328
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97280 this->couplingStencils(bulkIdx)[bulkElementIdx].push_back(lowDimElementIdx);
329 }
330
331 // export bulk circle stencil (only needed for circle average)
332
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48640 if (useCircleAverage)
333 {
334 if constexpr (isBox<bulkIdx>())
335 {
336 // we insert all vertices and make it unique later
337 for (const auto& vertices : circleCornerIndices)
338 {
339 extendedSourceStencil_.stencil()[bulkElementIdx].insert(extendedSourceStencil_.stencil()[bulkElementIdx].end(),
340 vertices->begin(), vertices->end());
341
342 }
343 }
344 else
345 {
346
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97280 extendedSourceStencil_.stencil()[bulkElementIdx].insert(extendedSourceStencil_.stencil()[bulkElementIdx].end(),
347 circleStencil.begin(), circleStencil.end());
348 }
349 }
350 }
351 }
352 }
353 }
354
355 // make the circle stencil unique (for source derivatives)
356
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1840 for (auto&& stencil : extendedSourceStencil_.stencil())
357 {
358 5460 std::sort(stencil.second.begin(), stencil.second.end());
359 9100 stencil.second.erase(std::unique(stencil.second.begin(), stencil.second.end()), stencil.second.end());
360
361 // remove the vertices element (box)
362 if constexpr (isBox<bulkIdx>())
363 {
364 const auto& indices = this->vertexIndices(bulkIdx, stencil.first);
365 stencil.second.erase(std::remove_if(stencil.second.begin(), stencil.second.end(),
366 [&](auto i){ return std::find(indices.begin(), indices.end(), i) != indices.end(); }),
367 stencil.second.end());
368 }
369 // remove the own element (cell-centered)
370 else
371 {
372 9100 stencil.second.erase(std::remove_if(stencil.second.begin(), stencil.second.end(),
373
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26550 [&](auto i){ return i == stencil.first; }),
374 stencil.second.end());
375 }
376 }
377
378 // make stencils unique
379 using namespace Dune::Hybrid;
380 45 forEach(integralRange(Dune::index_constant<2>{}), [&](const auto domainIdx)
381 {
382
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1955 for (auto&& stencil : this->couplingStencils(domainIdx))
383 {
384 5745 std::sort(stencil.second.begin(), stencil.second.end());
385 9575 stencil.second.erase(std::unique(stencil.second.begin(), stencil.second.end()), stencil.second.end());
386 }
387 });
388
389 15 std::cout << "took " << watch.elapsed() << " seconds." << std::endl;
390 5 }
391
392 //! Compute the low dim volume fraction in the bulk domain cells
393 5 void computeLowDimVolumeFractions()
394 {
395 // resize the storage vector
396
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5 lowDimVolumeInBulkElement_.resize(this->gridView(bulkIdx).size(0));
397 // get references to the grid geometries
398
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5 const auto& lowDimGridGeometry = this->problem(lowDimIdx).gridGeometry();
399
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5 const auto& bulkGridGeometry = this->problem(bulkIdx).gridGeometry();
400
401 // compute the low dim volume fractions
402
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110 for (const auto& is : intersections(this->glue()))
403 {
404 // all inside elements are identical...
405 95 const auto& inside = is.targetEntity(0);
406 95 const auto intersectionGeometry = is.geometry();
407 190 const auto lowDimElementIdx = lowDimGridGeometry.elementMapper().index(inside);
408
409 // compute the volume the low-dim domain occupies in the bulk domain if it were full-dimensional
410
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95 const auto radius = this->problem(lowDimIdx).spatialParams().radius(lowDimElementIdx);
411
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855 for (int outsideIdx = 0; outsideIdx < is.numDomainNeighbors(); ++outsideIdx)
412 {
413 380 const auto& outside = is.domainEntity(outsideIdx);
414 760 const auto bulkElementIdx = bulkGridGeometry.elementMapper().index(outside);
415 1140 lowDimVolumeInBulkElement_[bulkElementIdx] += intersectionGeometry.volume()*M_PI*radius*radius;
416 }
417 }
418 5 }
419
420 /*!
421 * \brief Methods to be accessed by the subproblems
422 */
423 // \{
424
425 //! Return a reference to the bulk problem
426 Scalar radius(std::size_t id) const
427 {
428
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6369280 const auto& data = this->pointSourceData()[id];
429
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3184640 return this->problem(lowDimIdx).spatialParams().radius(data.lowDimElementIdx());
430 }
431
432 //! The volume the lower dimensional domain occupies in the bulk domain element
433 // For one-dimensional low dim domain we assume radial tubes
434 Scalar lowDimVolume(const Element<bulkIdx>& element) const
435 {
436 const auto eIdx = this->problem(bulkIdx).gridGeometry().elementMapper().index(element);
437 return lowDimVolumeInBulkElement_[eIdx];
438 }
439
440 //! The volume fraction the lower dimensional domain occupies in the bulk domain element
441 // For one-dimensional low dim domain we assume radial tubes
442 Scalar lowDimVolumeFraction(const Element<bulkIdx>& element) const
443 {
444 const auto totalVolume = element.geometry().volume();
445 return lowDimVolume(element) / totalVolume;
446 }
447
448 // \}
449
450 /*!
451 * \brief Extended source stencil (for the bulk domain)
452 */
453 const typename ParentType::template CouplingStencils<bulkIdx>::mapped_type&
454 601000 extendedSourceStencil(std::size_t eIdx) const
455 {
456 601000 const auto& sourceStencils = extendedSourceStencil_.stencil();
457
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1803000 if (auto stencil = sourceStencils.find(eIdx); stencil != sourceStencils.end())
458 7280 return stencil->second;
459
460 1194720 return this->emptyStencil(bulkIdx);
461 }
462
463 private:
464 //! the extended source stencil object
465 EmbeddedCoupling::ExtendedSourceStencil<ThisType> extendedSourceStencil_;
466
467 //! vector for the volume fraction of the lowdim domain in the bulk domain cells
468 std::vector<Scalar> lowDimVolumeInBulkElement_;
469 };
470
471 //! we support multithreaded assembly
472 template<class MDTraits>
473 struct CouplingManagerSupportsMultithreadedAssembly<Embedded1d3dCouplingManager<MDTraits, Embedded1d3dCouplingMode::Surface>>
474 : public std::true_type {};
475
476 } // end namespace Dumux
477
478 #endif
479