884c5ab027
this is required for consistency amongst the compile units which are linked into the same library and seems to be forgotten quite frequently.
184 lines
7.3 KiB
C++
184 lines
7.3 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 "config.h"
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#include <opm/core/utility/VelocityInterpolation.hpp>
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#include <opm/core/grid.h>
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#include <opm/core/linalg/blas_lapack.h>
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namespace Opm
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{
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// -------- Methods of class VelocityInterpolationInterface --------
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VelocityInterpolationInterface::~VelocityInterpolationInterface()
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{
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}
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// -------- Methods of class VelocityInterpolationConstant --------
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/// Constructor.
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/// \param[in] grid A grid.
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VelocityInterpolationConstant::VelocityInterpolationConstant(const UnstructuredGrid& grid)
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: grid_(grid)
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{
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}
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/// Set up fluxes for interpolation.
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/// \param[in] flux One signed flux per face in the grid.
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void VelocityInterpolationConstant::setupFluxes(const double* flux)
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{
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flux_ = flux;
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}
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/// Interpolate velocity.
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/// \param[in] cell Cell in which to interpolate.
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/// \param[in] x Coordinates of point at which to interpolate.
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/// Must be array of length grid.dimensions.
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/// \param[out] v Interpolated velocity.
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/// Must be array of length grid.dimensions.
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void VelocityInterpolationConstant::interpolate(const int cell,
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const double* /*x*/,
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double* v) const
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{
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const int dim = grid_.dimensions;
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std::fill(v, v + dim, 0.0);
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const double* cc = grid_.cell_centroids + cell*dim;
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for (int hface = grid_.cell_facepos[cell]; hface < grid_.cell_facepos[cell+1]; ++hface) {
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const int face = grid_.cell_faces[hface];
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const double* fc = grid_.face_centroids + face*dim;
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double face_flux = 0.0;
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if (cell == grid_.face_cells[2*face]) {
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face_flux = flux_[face];
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} else {
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ASSERT(cell == grid_.face_cells[2*face + 1]);
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face_flux = -flux_[face];
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}
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for (int dd = 0; dd < dim; ++dd) {
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v[dd] += face_flux * (fc[dd] - cc[dd]) / grid_.cell_volumes[cell];
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}
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}
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}
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// -------- Methods of class VelocityInterpolationECVI --------
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/// Constructor.
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/// \param[in] grid A grid.
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VelocityInterpolationECVI::VelocityInterpolationECVI(const UnstructuredGrid& grid)
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: bcmethod_(grid), grid_(grid)
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{
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}
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/// Set up fluxes for interpolation.
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/// Computes the corner velocities.
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/// \param[in] flux One signed flux per face in the grid.
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void VelocityInterpolationECVI::setupFluxes(const double* flux)
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{
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// We must now update the velocity member of the CornerInfo
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// for each corner.
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const int dim = grid_.dimensions;
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std::vector<double> N(dim*dim); // Normals matrix. Fortran ordering!
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std::vector<double> orig_N(dim*dim); // Normals matrix. Fortran ordering!
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std::vector<double> f(dim); // Flux vector.
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std::vector<double> orig_f(dim); // Flux vector.
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std::vector<MAT_SIZE_T> piv(dim); // For LAPACK solve
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const SparseTable<WachspressCoord::CornerInfo>& all_ci = bcmethod_.cornerInfo();
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const std::vector<int>& adj_faces = bcmethod_.adjacentFaces();
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corner_velocity_.resize(dim*all_ci.dataSize());
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const int num_cells = grid_.number_of_cells;
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for (int cell = 0; cell < num_cells; ++cell) {
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const int num_cell_corners = bcmethod_.numCorners(cell);
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for (int cell_corner = 0; cell_corner < num_cell_corners; ++cell_corner) {
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const int cid = all_ci[cell][cell_corner].corner_id;
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for (int adj_ix = 0; adj_ix < dim; ++adj_ix) {
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const int face = adj_faces[dim*cid + adj_ix];
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const double* fn = grid_.face_normals + dim*face;
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for (int dd = 0; dd < dim; ++dd) {
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N[adj_ix + dd*dim] = fn[dd]; // Row adj_ix, column dd
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}
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f[adj_ix] = flux[face];
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}
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// Now we have built N and f. Solve Nv = f.
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// Note that the face orientations do not matter,
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// as changing an orientation would negate both a
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// row in N and the corresponding element of f.
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// Solving linear equation with LAPACK.
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MAT_SIZE_T n = dim;
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MAT_SIZE_T nrhs = 1;
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MAT_SIZE_T lda = n;
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MAT_SIZE_T ldb = n;
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MAT_SIZE_T info = 0;
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orig_N = N;
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orig_f = f;
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dgesv_(&n, &nrhs, &N[0], &lda, &piv[0], &f[0], &ldb, &info);
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if (info != 0) {
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// Print the local matrix and rhs.
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std::cerr << "Failed solving single-cell system Nv = f in cell " << cell
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<< " with N = \n";
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for (int row = 0; row < n; ++row) {
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for (int col = 0; col < n; ++col) {
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std::cerr << " " << orig_N[row + n*col];
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}
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std::cerr << '\n';
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}
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std::cerr << "and f = \n";
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for (int row = 0; row < n; ++row) {
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std::cerr << " " << orig_f[row] << '\n';
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}
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THROW("Lapack error: " << info << " encountered in cell " << cell);
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}
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// The solution ends up in f, so we must copy it.
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std::copy(f.begin(), f.end(), corner_velocity_.begin() + dim*cid);
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}
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}
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}
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/// Interpolate velocity.
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/// \param[in] cell Cell in which to interpolate.
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/// \param[in] x Coordinates of point at which to interpolate.
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/// Must be array of length grid.dimensions.
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/// \param[out] v Interpolated velocity.
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/// Must be array of length grid.dimensions.
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void VelocityInterpolationECVI::interpolate(const int cell,
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const double* x,
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double* v) const
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{
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const int n = bcmethod_.numCorners(cell);
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const int dim = grid_.dimensions;
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bary_coord_.resize(n);
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bcmethod_.cartToBary(cell, x, &bary_coord_[0]);
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std::fill(v, v + dim, 0.0);
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const SparseTable<WachspressCoord::CornerInfo>& all_ci = bcmethod_.cornerInfo();
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for (int i = 0; i < n; ++i) {
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const int cid = all_ci[cell][i].corner_id;
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for (int dd = 0; dd < dim; ++dd) {
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v[dd] += corner_velocity_[dim*cid + dd] * bary_coord_[i];
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}
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}
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}
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} // namespace Opm
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