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Added methods pressureSide() and fluxSide().
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Atgeirr Flø Rasmussen
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commit
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@ -20,10 +20,19 @@
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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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@ -74,6 +83,61 @@ namespace Opm
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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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@ -84,4 +148,75 @@ namespace Opm
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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 };
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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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@ -22,6 +22,8 @@
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#include <opm/core/pressure/flow_bc.h>
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struct UnstructuredGrid;
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namespace Opm
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{
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@ -57,6 +59,33 @@ namespace Opm
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const int face,
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const double value);
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/// Defines the canonical sides for logical cartesian grids.
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enum Side { Xmin, Xmax, Ymin, Ymax, Zmin, Zmax };
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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 pressureSide(const UnstructuredGrid& grid,
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const Side side,
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const double pressure);
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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 fluxSide(const UnstructuredGrid& grid,
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const Side side,
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const double flux);
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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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