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Function cfs_tpfa_residual_assemble() and friends now return singularity flag.

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The singularity flag is true if there are no pressure conditions and no
compressibility (so the absolute values of the pressure solution will be
arbitrary).
This commit is contained in:
Atgeirr Flø Rasmussen 2012-08-23 14:00:04 +02:00
parent e96421dbd7
commit 983a29691c
2 changed files with 29 additions and 26 deletions
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42
opm/core/pressure/tpfa/cfs_tpfa_residual.c
View File

@ -1156,7 +1156,7 @@ cfs_tpfa_res_construct(struct UnstructuredGrid *G ,
/* ---------------------------------------------------------------------- */ /* ---------------------------------------------------------------------- */
void int
cfs_tpfa_res_assemble(struct UnstructuredGrid *G , cfs_tpfa_res_assemble(struct UnstructuredGrid *G ,
double dt , double dt ,
struct cfs_tpfa_res_forces *forces , struct cfs_tpfa_res_forces *forces ,
@ -1170,7 +1170,7 @@ cfs_tpfa_res_assemble(struct UnstructuredGrid *G ,
struct cfs_tpfa_res_data *h ) struct cfs_tpfa_res_data *h )
/* ---------------------------------------------------------------------- */ /* ---------------------------------------------------------------------- */
{ {
int res_is_neumann, well_is_neumann, c, np2; int res_is_neumann, well_is_neumann, c, np2, singular;
csrmatrix_zero( h->J); csrmatrix_zero( h->J);
vector_zero (h->J->m, h->F); vector_zero (h->J->m, h->F);
@ -1207,14 +1207,17 @@ cfs_tpfa_res_assemble(struct UnstructuredGrid *G ,
assemble_sources(dt, forces->src, h); assemble_sources(dt, forces->src, h);
} }
if (res_is_neumann && well_is_neumann && h->pimpl->is_incomp) { singular = res_is_neumann && well_is_neumann && h->pimpl->is_incomp;
h->J->sa[0] *= 2; if (singular) {
h->J->sa[0] *= 2.0;
} }
return singular;
} }
/* ---------------------------------------------------------------------- */ /* ---------------------------------------------------------------------- */
void int
cfs_tpfa_res_comprock_assemble( cfs_tpfa_res_comprock_assemble(
struct UnstructuredGrid *G , struct UnstructuredGrid *G ,
double dt , double dt ,
@ -1240,29 +1243,18 @@ cfs_tpfa_res_comprock_assemble(
* porevol(pressure)*rock_comp(pressure)/dt * porevol(pressure)*rock_comp(pressure)/dt
*/ */
int c, w, well_is_neumann, rock_is_incomp; int c, rock_is_incomp, singular;
size_t j; size_t j;
double dpv; double dpv;
const struct Wells* W;
/* Assemble usual system (without rock compressibility). */ /* Assemble usual system (without rock compressibility). */
cfs_tpfa_res_assemble(G, dt, forces, zc, cq, trans, gravcap_f, singular = cfs_tpfa_res_assemble(G, dt, forces, zc, cq, trans, gravcap_f,
cpress, wpress, porevol0, h); cpress, wpress, porevol0, h);
/* Check if we have only Neumann wells. */
well_is_neumann = 1;
W = forces->wells->W;
for (w = 0; well_is_neumann && w < W->number_of_wells; w++) {
if ((W->ctrls[w]->current >= 0) && /* OPEN? */
(W->ctrls[w]->type[ W->ctrls[w]->current ] == BHP)) {
well_is_neumann = 0;
}
}
/* If we made a singularity-removing adjustment in the /* If we made a singularity-removing adjustment in the
regular assembly, we undo it here. */ regular assembly, we undo it here. */
if (well_is_neumann && h->pimpl->is_incomp) { if (singular) {
h->J->sa[0] /= 2; h->J->sa[0] /= 2.0;
} }
/* Add new terms to residual and Jacobian. */ /* Add new terms to residual and Jacobian. */
@ -1280,9 +1272,11 @@ cfs_tpfa_res_comprock_assemble(
} }
/* Re-do the singularity-removing adjustment if necessary */ /* Re-do the singularity-removing adjustment if necessary */
if (rock_is_incomp && well_is_neumann && h->pimpl->is_incomp) { if (rock_is_incomp && singular) {
h->J->sa[0] *= 2; h->J->sa[0] *= 2.0;
} }
return rock_is_incomp && singular;
} }

13
opm/core/pressure/tpfa/cfs_tpfa_residual.h
View File

@ -59,7 +59,11 @@ cfs_tpfa_res_construct(struct UnstructuredGrid *G ,
void void
cfs_tpfa_res_destroy(struct cfs_tpfa_res_data *h); cfs_tpfa_res_destroy(struct cfs_tpfa_res_data *h);
void /* Return value is 1 if the assembled matrix was adjusted to remove a
singularity. This happens if all fluids are incompressible and
there are no pressure conditions on wells or boundaries.
Otherwise return 0. */
int
cfs_tpfa_res_assemble(struct UnstructuredGrid *G, cfs_tpfa_res_assemble(struct UnstructuredGrid *G,
double dt, double dt,
struct cfs_tpfa_res_forces *forces, struct cfs_tpfa_res_forces *forces,
@ -72,7 +76,12 @@ cfs_tpfa_res_assemble(struct UnstructuredGrid *G,
const double *porevol, const double *porevol,
struct cfs_tpfa_res_data *h); struct cfs_tpfa_res_data *h);
void /* Return value is 1 if the assembled matrix was adjusted to remove a
singularity. This happens if all fluids are incompressible, the
rock is incompressible, and there are no pressure conditions on
wells or boundaries.
Otherwise return 0. */
int
cfs_tpfa_res_comprock_assemble( cfs_tpfa_res_comprock_assemble(
struct UnstructuredGrid *G, struct UnstructuredGrid *G,
double dt, double dt,