void test_flowsolver(const GI& g, const RI& r, double tol, int kind) { typedef typename GI::CellIterator CI; typedef typename CI::FaceIterator FI; typedef double (*SolutionFuncPtr)(const Vec&); //typedef Dune::BasicBoundaryConditions<true, false> FBC; typedef Dune::FunctionBoundaryConditions<SolutionFuncPtr> FBC; typedef Dune::IncompFlowSolverHybrid<GI, RI, FBC, Dune::MimeticIPEvaluator> FlowSolver; FlowSolver solver; // FBC flow_bc; // assign_bc(g, flow_bc); FBC flow_bc(&u); typename CI::Vector gravity(0.0); std::cout << "========== Init pressure solver =============" << std::endl; Dune::time::StopWatch rolex; rolex.start(); solver.init(g, r, gravity, flow_bc); rolex.stop(); std::cout << "========== Time in seconds: " << rolex.secsSinceStart() << " =============" << std::endl; std::vector<double> src(g.numberOfCells(), 0.0); assign_src(g, src); std::vector<double> sat(g.numberOfCells(), 0.0); std::cout << "========== Starting pressure solve =============" << std::endl; rolex.start(); solver.solve(r, sat, flow_bc, src, tol, 3, kind); rolex.stop(); std::cout << "========== Time in seconds: " << rolex.secsSinceStart() << " =============" << std::endl; typedef typename FlowSolver::SolutionType FlowSolution; FlowSolution soln = solver.getSolution(); std::vector<typename GI::Vector> cell_velocity; estimateCellVelocity(cell_velocity, g, solver.getSolution()); // Dune's vtk writer wants multi-component data to be flattened. std::vector<double> cell_velocity_flat(&*cell_velocity.front().begin(), &*cell_velocity.back().end()); std::vector<double> cell_pressure; getCellPressure(cell_pressure, g, soln); compare_pressure(g, cell_pressure); Dune::VTKWriter<typename GI::GridType::LeafGridView> vtkwriter(g.grid().leafView()); vtkwriter.addCellData(cell_velocity_flat, "velocity", GI::GridType::dimension); vtkwriter.addCellData(cell_pressure, "pressure"); vtkwriter.write("testsolution-" + boost::lexical_cast<std::string>(0), Dune::VTKOptions::ascii); }
/// @brief Estimates a scalar cell velocity from face fluxes. /// @param[in] grid a grid /// @param[in] face_flux signed per-face fluxes /// @param[out] cell_velocity the estimated velocities. void estimateCellVelocity(const UnstructuredGrid& grid, const std::vector<double>& face_flux, std::vector<double>& cell_velocity) { estimateCellVelocity(grid.number_of_cells, grid.number_of_faces, grid.face_centroids, UgGridHelpers::faceCells(grid), grid.cell_centroids, grid.cell_volumes, grid.dimensions, face_flux, cell_velocity); }