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52cda7cbb9
The trick of eliding explicit initialisers can only be use to zero an array (or structure), not to copy an arbitrary initialiser to all elements of the array.
223 lines
6.9 KiB
C++
223 lines
6.9 KiB
C++
/*
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Copyright 2012 SINTEF ICT, Applied Mathematics.
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <opm/core/pressure/FlowBCManager.hpp>
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#include <opm/core/utility/ErrorMacros.hpp>
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#include <opm/core/grid.h>
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#include <vector>
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namespace Opm
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{
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namespace
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{
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std::string sideString(FlowBCManager::Side s);
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void findSideFaces(const UnstructuredGrid& grid,
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const FlowBCManager::Side side,
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std::vector<int>& faces);
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} // anon namespace
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/// Default constructor sets up empty boundary conditions.
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/// By convention, this is equivalent to all-noflow conditions.
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FlowBCManager::FlowBCManager()
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: bc_(0)
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{
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bc_ = flow_conditions_construct(0);
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if (!bc_) {
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THROW("Failed to construct FlowBoundaryConditions struct.");
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}
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}
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/// Destructor.
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FlowBCManager::~FlowBCManager()
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{
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flow_conditions_destroy(bc_);
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}
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/// Remove all appended BCs.
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/// By convention, BCs are now equivalent to all-noflow conditions.
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void FlowBCManager::clear()
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{
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flow_conditions_clear(bc_);
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}
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/// Append a single boundary condition.
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/// If the type is BC_NOFLOW the value argument is not used.
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/// If the type is BC_PRESSURE the value argument is a pressure value.
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/// If the type is BC_FLUX_TOTVOL the value argument is a total flux value (m^3/s).
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/// Note: unset boundary conditions are noflow by convention,
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/// so it is normally not necessary to explicitly append
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/// BC_NOFLOW conditions. However, it may make sense to do so
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/// if the bc will change during a simulation run.
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/// Note: if normal velocity bcs are desired, convert to
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/// fluxes by multiplying with face area.
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void FlowBCManager::append(const FlowBCType type,
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const int face,
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const double value)
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{
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int ok = flow_conditions_append(type, face, value, bc_);
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if (!ok) {
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THROW("Failed to append boundary condition for face " << face);
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}
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}
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/// Add BC_PRESSURE boundary conditions to all faces on a given side.
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/// The grid must have a logical cartesian structure, and grid
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/// faces must be tagged (i.e. grid.cell_facetag must be
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/// non-null). Only the set of faces adjacent to cells with
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/// minimum/maximum I/J/K coordinate (depending on side) are
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/// considered.
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void FlowBCManager::pressureSide(const UnstructuredGrid& grid,
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const Side side,
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const double pressure)
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{
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std::vector<int> faces;
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findSideFaces(grid, side, faces);
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int ok = flow_conditions_append_multi(BC_PRESSURE, faces.size(), &faces[0], pressure, bc_);
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if (!ok) {
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THROW("Failed to append pressure boundary conditions for side " << sideString(side));
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}
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}
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/// Add BC_FLUX_TOTVOL boundary conditions to all faces on a given side.
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/// The grid must have a logical cartesian structure, and grid
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/// faces must be tagged (i.e. grid.cell_facetag must be
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/// non-null). Only the set of faces adjacent to cells with
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/// minimum/maximum I/J/K coordinate (depending on side) are
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/// considered.
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/// The flux specified is taken to be the total flux through
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/// the side, each individual face receiving a part of the
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/// total flux in proportion to its area, so that all faces
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/// will have identical normal velocities.
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void FlowBCManager::fluxSide(const UnstructuredGrid& grid,
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const Side side,
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const double flux)
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{
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// Find side faces.
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std::vector<int> faces;
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findSideFaces(grid, side, faces);
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// Compute total area of faces.
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double tot_area = 0.0;
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for (int fi = 0; fi < int(faces.size()); ++fi) {
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tot_area += grid.face_areas[faces[fi]];
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}
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// Append flux conditions for all the faces individually.
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for (int fi = 0; fi < int(faces.size()); ++fi) {
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const double face_flux = flux * grid.face_areas[faces[fi]] / tot_area;
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int ok = flow_conditions_append(BC_FLUX_TOTVOL, faces[fi], face_flux, bc_);
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if (!ok) {
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THROW("Failed to append flux boundary conditions for face " << faces[fi] << " on side " << sideString(side));
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}
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}
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}
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/// Access the managed boundary conditions.
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/// The method is named similarly to c_str() in std::string,
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/// to make it clear that we are returning a C-compatible struct.
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const FlowBoundaryConditions* FlowBCManager::c_bcs() const
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{
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return bc_;
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}
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// ------ Utility functions ------
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namespace
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{
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std::string sideString(FlowBCManager::Side s)
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{
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switch (s) {
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case FlowBCManager::Xmin: return "Xmin";
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case FlowBCManager::Xmax: return "Xmax";
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case FlowBCManager::Ymin: return "Ymin";
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case FlowBCManager::Ymax: return "Ymax";
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case FlowBCManager::Zmin: return "Zmin";
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case FlowBCManager::Zmax: return "Zmax";
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default: THROW("Unknown side tag " << s);
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}
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}
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void cartCoord(const int log_cart_coord,
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const int* dims,
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int* ijk)
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{
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ijk[2] = log_cart_coord / (dims[0]*dims[1]);
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ijk[1] = (log_cart_coord - ijk[2]*(dims[0]*dims[1])) / dims[0];
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ijk[0] = log_cart_coord % dims[0];
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}
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/// The grid must have a logical cartesian structure, and grid
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/// faces must be tagged (i.e. grid.cell_facetag must be
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/// non-null). Only the set of faces adjacent to cells with
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/// minimum/maximum I/J/K coordinate (depending on side) are
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/// considered.
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void findSideFaces(const UnstructuredGrid& grid,
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const FlowBCManager::Side side,
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std::vector<int>& faces)
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{
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if (grid.cell_facetag == 0) {
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THROW("Faces not tagged - cannot extract " << sideString(side) << " faces.");
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}
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// Get all boundary faces with the correct tag and with
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// min/max i/j/k (depending on side).
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const int correct_ijk = (side % 2) ? grid.cartdims[side/2] : 0;
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for (int c = 0; c < grid.number_of_cells; ++c) {
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int ijk[3] = { -1, -1, -1 };
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cartCoord(grid.global_cell[c], grid.cartdims, ijk);
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if (ijk[side/2] != correct_ijk) {
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continue;
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}
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for (int hf = grid.cell_facepos[c]; hf < grid.cell_facepos[c + 1]; ++hf) {
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if (grid.cell_facetag[hf] == side) {
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// Tag is correct.
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const int f = grid.cell_faces[hf];
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if (grid.face_cells[2*f] == -1 || grid.face_cells[2*f + 1] == -1) {
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// Face is on boundary.
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faces.push_back(f);
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} else {
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THROW("Face not on boundary, even with correct tag and boundary cell. This should not occur.");
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}
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}
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}
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}
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}
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} // anon namespace
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} // namespace Opm
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