Add initial files for implementing compressible flows.
This commit is contained in:
Bård Skaflestad
parent
d2fa5f4e10
commit
4388dc68d6
@ -14,6 +14,7 @@ coarse_conn.h \
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coarse_sys.h \
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dfs.h \
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flow_bc.h \
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fsh.h \
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fsh_common.h \
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grid.h \
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hash_set.h \
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@ -34,6 +35,7 @@ coarse_conn.c \
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coarse_sys.c \
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dfs.c \
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flow_bc.c \
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fsh.c \
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fsh_common.c \
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hash_set.c \
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hybsys.c \
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496
fsh.c
Normal file
496
fsh.c
Normal file
@ -0,0 +1,496 @@
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/*
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Copyright 2010 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 <assert.h>
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#include <limits.h>
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#include <math.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include "fsh_common.h"
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#include "ifsh.h"
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#include "fsh_common_impl.h"
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#include "hybsys.h"
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#include "hybsys_global.h"
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#if defined MAX
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#undef MAX
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#endif
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#define MAX(a,b) (((a) > (b)) ? (a) : (b))
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/* ---------------------------------------------------------------------- */
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static void
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fsh_compute_table_sz(grid_t *G, well_t *W, int max_ngconn,
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size_t *nnu, size_t *idata_sz, size_t *ddata_sz)
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/* ---------------------------------------------------------------------- */
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{
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int nc, ngconn_tot;
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*nnu = G->number_of_faces;
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nc = G->number_of_cells;
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ngconn_tot = G->cell_facepos[nc];
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*idata_sz = nc + 1; /* gdof_pos */
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*idata_sz += ngconn_tot; /* gdof */
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*idata_sz += max_ngconn; /* iwork */
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*ddata_sz = 2 * (*nnu); /* rhs + soln */
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*ddata_sz += ngconn_tot; /* cflux */
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*ddata_sz += max_ngconn; /* work */
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if (W != NULL) {
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*nnu += W->number_of_wells;
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/* cwell_pos */
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*idata_sz += nc + 1;
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/* cwells */
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*idata_sz += 2 * W->well_connpos[ W->number_of_wells ];
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/* rhs + soln */
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*ddata_sz += 2 * W->number_of_wells;
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/* WI, wdp */
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*ddata_sz += 2 * W->well_connpos[ W->number_of_wells ];
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}
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}
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#if 0
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/* ---------------------------------------------------------------------- */
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static void
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fsh_set_effective_well_params(const double *WI,
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const double *wdp,
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struct fsh_data *h)
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/* ---------------------------------------------------------------------- */
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{
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int c, nc, i, perf;
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int *cwpos, *cwells;
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double *wsys_WI, *wsys_wdp;
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nc = h->pimpl->nc;
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cwpos = h->pimpl->cwell_pos;
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cwells = h->pimpl->cwells;
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wsys_WI = h->pimpl->WI;
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wsys_wdp = h->pimpl->wdp;
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for (c = i = 0; c < nc; c++) {
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for (; i < cwpos[c + 1]; i++) {
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perf = cwells[2*i + 1];
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wsys_WI [i] = WI [perf];
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wsys_wdp[i] = wdp[perf];
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}
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}
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}
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#endif
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/* ---------------------------------------------------------------------- */
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static int
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fsh_assemble_grid(flowbc_t *bc,
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const double *Binv,
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const double *gpress,
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const double *src,
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struct fsh_data *h)
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/* ---------------------------------------------------------------------- */
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{
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int c, n, nc, p1, p2;
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int npp;
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int *pgconn, *gconn;
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nc = h->pimpl->nc;
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pgconn = h->pimpl->gdof_pos;
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gconn = h->pimpl->gdof;
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p1 = p2 = npp = 0;
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for (c = 0; c < nc; c++) {
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n = pgconn[c + 1] - pgconn[c];
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hybsys_cellcontrib_unsymm(c, n, p1, p2, gpress, src, Binv,
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h->pimpl->sys);
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npp += fsh_impose_bc(n, gconn + p1, bc, h->pimpl);
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hybsys_global_assemble_cell(n, gconn + p1,
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h->pimpl->sys->S,
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h->pimpl->sys->r, h->A, h->b);
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p1 += n;
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p2 += n * n;
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}
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return npp;
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}
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#if 0
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/* ---------------------------------------------------------------------- */
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static void
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fsh_impose_well_control(int c,
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flowbc_t *bc,
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well_control_t *wctrl,
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struct fsh_data *ifsh)
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/* ---------------------------------------------------------------------- */
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{
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int ngconn, nwconn, i, w1, w2, wg, f;
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int *pgconn, *gconn, *pwconn, *wconn;
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double bhp;
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double *r, *r2w, *w2w;
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/* Enforce symmetric system */
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assert (ifsh->pimpl->wsys->r2w == ifsh->pimpl->wsys->w2r);
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pgconn = ifsh->pimpl->gdof_pos;
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pwconn = ifsh->pimpl->cwell_pos;
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gconn = ifsh->pimpl->gdof + pgconn[c];
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wconn = ifsh->pimpl->cwells + 2*pwconn[c];
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ngconn = pgconn[c + 1] - pgconn[c];
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nwconn = pwconn[c + 1] - pwconn[c];
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r2w = ifsh->pimpl->wsys->r2w;
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w2w = ifsh->pimpl->wsys->w2w;
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r = ifsh->pimpl->wsys->r ;
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/* Adapt local system to prescribed boundary pressures (r->w) */
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for (i = 0; i < ngconn; i++) {
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f = gconn[i];
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if (bc->type[f] == PRESSURE) {
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for (w1 = 0; w1 < nwconn; w1++) {
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/* Eliminate prescribed (boundary) pressure value */
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r [ngconn + w1] -= r2w[i + w1*ngconn] * bc->bcval[f];
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r2w[i + w1*ngconn] = 0.0;
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}
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r[i] = 0.0; /* RHS value handled in *reservoir* asm */
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}
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}
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/* Adapt local system to prescribed well (bottom-hole) pressures;
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* w->r and w->w. */
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for (w1 = 0; w1 < nwconn; w1++) {
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wg = wconn[2*w1 + 0];
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if (wctrl->ctrl[wg] == BHP) {
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bhp = wctrl->target[wg];
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/* Well->reservoir */
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for (i = 0; i < ngconn; i++) {
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assert ((bc->type[gconn[i]] != PRESSURE) ||
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!(fabs(r2w[i + w1*ngconn]) > 0.0));
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r [i] -= r2w[i + w1*ngconn] * bhp;
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r2w[i + w1*ngconn] = 0.0;
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}
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/* Well->well */
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for (w2 = (w1 + 1) % nwconn; w2 != w1; w2 = (w2 + 1) % nwconn) {
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r [ngconn + w2] -= w2w[w2 + w1*nwconn] * bhp;
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w2w[w2 + w1*ngconn] = 0.0;
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w2w[w1 + w2*ngconn] = 0.0;
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}
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/* Assemble final well equation of the form S*p_bh = S*p_bh^0 */
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assert (fabs(w2w[w1 * (nwconn + 1)]) > 0.0);
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r[ngconn + w1] = w2w[w1 * (nwconn + 1)] * bhp;
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}
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}
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}
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#endif
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#if 0
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/* ---------------------------------------------------------------------- */
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static int
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fsh_assemble_well(flowbc_t *bc,
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well_control_t *wctrl,
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struct fsh_data *ifsh)
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/* ---------------------------------------------------------------------- */
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{
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int npp;
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int ngconn, nwconn, c, nc, w;
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int *pgconn, *gconn, *pwconn, *wconn;
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nc = ifsh->pimpl->nc;
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pgconn = ifsh->pimpl->gdof_pos;
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gconn = ifsh->pimpl->gdof;
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pwconn = ifsh->pimpl->cwell_pos;
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wconn = ifsh->pimpl->cwells;
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for (c = 0; c < nc; c++) {
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ngconn = pgconn[c + 1] - pgconn[c];
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nwconn = pwconn[c + 1] - pwconn[c];
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if (nwconn > 0) {
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hybsys_well_cellcontrib_symm(c, ngconn, pgconn[c],
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pwconn,
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ifsh->pimpl->WI,
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ifsh->pimpl->wdp,
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ifsh->pimpl->sys,
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ifsh->pimpl->wsys);
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ifsh_impose_well_control(c, bc, wctrl, ifsh);
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hybsys_global_assemble_well_sym(ifsh->pimpl->nf,
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ngconn, gconn + pgconn[c],
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nwconn, wconn + 2*pwconn[c] + 0,
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ifsh->pimpl->wsys->r2w,
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ifsh->pimpl->wsys->w2w,
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ifsh->pimpl->wsys->r,
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ifsh->A, ifsh->b);
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}
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}
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npp = 0;
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for (w = 0; w < ifsh->pimpl->nw; w++) {
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if (wctrl->ctrl[w] == BHP) {
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npp += 1;
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} else if (wctrl->ctrl[w] == RATE) {
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/* Impose total rate constraint.
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*
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* Note sign resulting from ->target[w] denoting
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* *injection* flux. */
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ifsh->b[ifsh->pimpl->nf + w] -= - wctrl->target[w];
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}
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}
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return npp;
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}
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#endif
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/* ======================================================================
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* Public routines follow.
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* ====================================================================== */
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/* ---------------------------------------------------------------------- */
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/* Allocate and define supporting structures for assembling the global
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* system of linear equations to couple the grid (reservoir)
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* connections represented by 'G' and, if present (i.e., non-NULL),
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* the well connections represented by 'W'. */
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/* ---------------------------------------------------------------------- */
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struct fsh_data *
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fsh_construct(grid_t *G, well_t *W)
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/* ---------------------------------------------------------------------- */
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{
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int nc, ngconn_tot;
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size_t idata_sz, ddata_sz, nnu;
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struct fsh_data *new;
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assert (G != NULL);
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/* Allocate master structure, define system matrix sparsity */
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new = malloc(1 * sizeof *new);
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if (new != NULL) {
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new->A = hybsys_define_globconn(G, W);
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new->pimpl = NULL;
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if (new->A == NULL) {
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fsh_destroy(new);
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new = NULL;
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}
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}
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/* Allocate implementation structure */
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if (new != NULL) {
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fsh_count_grid_dof(G, &new->max_ngconn, &new->sum_ngconn2);
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fsh_compute_table_sz(G, W, new->max_ngconn,
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&nnu, &idata_sz, &ddata_sz);
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new->pimpl = fsh_impl_allocate_basic(idata_sz, ddata_sz);
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if (new->pimpl == NULL) {
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fsh_destroy(new);
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new = NULL;
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}
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}
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/* Allocate Schur complement contributions. Symmetric system. */
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if (new != NULL) {
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nc = G->number_of_cells;
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ngconn_tot = G->cell_facepos[nc];
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fsh_define_linsys_arrays(new);
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fsh_define_impl_arrays(nc, nnu, ngconn_tot, new->max_ngconn,
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W, new->pimpl);
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new->pimpl->sys = hybsys_allocate_unsymm(new->max_ngconn,
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nc, ngconn_tot);
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if (W != NULL) {
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fsh_define_cell_wells(nc, W, new->pimpl);
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new->pimpl->wsys = hybsys_well_allocate_symm(new->max_ngconn, nc,
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new->pimpl->cwell_pos);
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}
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if ((new->pimpl->sys == NULL) ||
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((W != NULL) && (new->pimpl->wsys == NULL))) {
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/* Failed to allocate ->sys or ->wsys (if W != NULL) */
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fsh_destroy(new);
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new = NULL;
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}
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}
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if (new != NULL) {
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/* All allocations succeded. Fill metadata and return. */
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new->pimpl->nc = nc;
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new->pimpl->nf = G->number_of_faces;
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new->pimpl->nw = (W != NULL) ? W->number_of_wells : 0;
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memcpy(new->pimpl->gdof_pos,
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G->cell_facepos ,
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(nc + 1) * sizeof *new->pimpl->gdof_pos);
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memcpy(new->pimpl->gdof ,
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G->cell_faces ,
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ngconn_tot * sizeof *new->pimpl->gdof);
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hybsys_init(new->max_ngconn, new->pimpl->sys);
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}
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return new;
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}
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/* ---------------------------------------------------------------------- */
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/* Assemble global system of linear equations
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*
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* ifsh->A * ifsh->x = ifsh->b
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*
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* from local inner product matrices Binv, gravity pressure gpress,
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* boundary conditions bc, source terms src and fluid properties
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* totmob and omega. */
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/* ---------------------------------------------------------------------- */
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void
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fsh_assemble(flowbc_t *bc,
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const double *src,
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const double *Binv,
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const double *Biv,
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const double *P,
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const double *gpress,
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well_control_t *wctrl,
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const double *WI,
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const double *BivW,
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const double *wdp,
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struct fsh_data *h)
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/* ---------------------------------------------------------------------- */
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{
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int npp; /* Number of prescribed pressure values */
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hybsys_schur_comp_unsymm(h->pimpl->nc,
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h->pimpl->gdof_pos,
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Binv, Biv, P, h->pimpl->sys);
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#if 0
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if (ifsh->pimpl->nw > 0) {
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ifsh_set_effective_well_params(WI, wdp, ifsh);
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hybsys_well_schur_comp_symm(ifsh->pimpl->nc,
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ifsh->pimpl->cwell_pos,
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ifsh->pimpl->WI,
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ifsh->pimpl->sys,
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ifsh->pimpl->wsys);
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}
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#endif
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npp = fsh_assemble_grid(bc, Binv, gpress, src, h);
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#if 0
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if (ifsh->pimpl->nw > 0) {
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npp += ifsh_assemble_well(bc, wctrl, ifsh);
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}
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#endif
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if (npp == 0) {
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h->A->sa[0] *= 2; /* Remove zero eigenvalue */
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}
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}
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/* ---------------------------------------------------------------------- */
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/* Compute cell pressures (cpress) and interface fluxes (fflux) from
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* current solution of system of linear equations, h->x. Back
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* substitution process, projected half-contact fluxes. */
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/* ---------------------------------------------------------------------- */
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void
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ifsh_press_flux(grid_t *G,
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const double *Binv, const double *gpress,
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struct fsh_data *h,
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double *cpress, double *fflux,
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double *wpress, double *wflux)
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/* ---------------------------------------------------------------------- */
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{
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int c, f, i;
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double s;
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hybsys_compute_press_flux(G->number_of_cells,
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G->cell_facepos,
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G->cell_faces,
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gpress, Binv,
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h->pimpl->sys,
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h->x, cpress, h->pimpl->cflux,
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h->pimpl->work);
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if (h->pimpl->nw > 0) {
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assert ((wpress != NULL) && (wflux != NULL));
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hybsys_compute_press_flux_well(G->number_of_cells, G->cell_facepos,
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G->number_of_faces, h->pimpl->nw,
|
||||
h->pimpl->cwell_pos, h->pimpl->cwells,
|
||||
Binv, h->pimpl->WI,
|
||||
h->pimpl->wdp, h->pimpl->sys,
|
||||
h->pimpl->wsys, h->x, cpress,
|
||||
h->pimpl->cflux, wpress, wflux,
|
||||
h->pimpl->work);
|
||||
}
|
||||
|
||||
for (f = 0; f < G->number_of_faces; f++) { fflux[f] = 0.0; }
|
||||
|
||||
i = 0;
|
||||
for (c = 0; c < G->number_of_cells; c++) {
|
||||
for (; i < G->cell_facepos[c + 1]; i++) {
|
||||
f = G->cell_faces[i];
|
||||
s = 2.0*(G->face_cells[2*f + 0] == c) - 1.0;
|
||||
|
||||
fflux[f] += s * h->pimpl->cflux[i];
|
||||
}
|
||||
}
|
||||
|
||||
for (f = 0; f < G->number_of_faces; f++) {
|
||||
i = (G->face_cells[2*f + 0] >= 0) +
|
||||
(G->face_cells[2*f + 1] >= 0);
|
||||
|
||||
fflux[f] /= i;
|
||||
}
|
||||
}
|
||||
71
fsh.h
Normal file
71
fsh.h
Normal file
@ -0,0 +1,71 @@
|
||||
/*
|
||||
Copyright 2010 SINTEF ICT, Applied Mathematics.
|
||||
|
||||
This file is part of the Open Porous Media project (OPM).
|
||||
|
||||
OPM is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
OPM is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with OPM. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef OPM_FSH_HEADER_INCLUDED
|
||||
#define OPM_FHS_HEADER_INCLUDED
|
||||
|
||||
#include "grid.h"
|
||||
#include "well.h"
|
||||
#include "flow_bc.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
struct fsh_data;
|
||||
|
||||
/** Constructs incompressible hybrid flow-solver data object for a
|
||||
* given grid and well pattern.
|
||||
*/
|
||||
struct fsh_data *
|
||||
fsh_construct(grid_t *G, well_t *W);
|
||||
|
||||
|
||||
|
||||
/** Assembles the hybridized linear system for face pressures.
|
||||
*/
|
||||
void
|
||||
fsh_assemble(flowbc_t *bc,
|
||||
const double *src,
|
||||
const double *Binv,
|
||||
const double *Biv,
|
||||
const double *P,
|
||||
const double *gpress,
|
||||
well_control_t *wctrl,
|
||||
const double *WI,
|
||||
const double *BivW,
|
||||
const double *wdp,
|
||||
struct fsh_data *h);
|
||||
|
||||
/** Computes cell pressures, face fluxes, well pressures and well
|
||||
* fluxes from face pressures.
|
||||
*/
|
||||
void
|
||||
fsh_press_flux(grid_t *G,
|
||||
const double *Binv, const double *gpress,
|
||||
struct fsh_data *h,
|
||||
double *cpress, double *fflux,
|
||||
double *wpress, double *wflux);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
#endif /* OPM_IFSH_HEADER_INCLUDED */
|
||||
Loading…
Reference in New Issue
Block a user