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Changed well initialization and property calculation.

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Bhp is now initialized to bhp target for bhp-controlled wells.
Mobilities and pvt properties are now calculated from
well perforation pressure and injection specifications for
injectors, producers still use cell properties as before.
This commit is contained in:
Atgeirr Flø Rasmussen 2012-09-14 09:53:11 +02:00
parent bdcf0291e0
commit fa6b772972
2 changed files with 42 additions and 10 deletions
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35
opm/core/pressure/CompressibleTpfa.cpp
View File

@ -36,6 +36,7 @@
#include <cmath>
#include <iostream>
#include <iomanip>
#include <numeric>
namespace Opm
{
@ -446,7 +447,7 @@ namespace Opm
/// Compute per-iteration dynamic properties for wells.
void CompressibleTpfa::computeWellDynamicData(const double /*dt*/,
const BlackoilState& /*state*/,
const WellState& /*well_state*/)
const WellState& well_state)
{
// These are the variables that get computed by this function:
//
@ -458,18 +459,42 @@ namespace Opm
wellperf_A_.resize(nperf*np*np);
wellperf_phasemob_.resize(nperf*np);
// The A matrix is set equal to the perforation grid cells'
// matrix, for both injectors and producers.
// matrix for producers, computed from bhp and injection
// component fractions from
// The mobilities are set equal to the perforation grid cells'
// mobilities, for both injectors and producers.
// mobilities for producers.
std::vector<double> mu(np);
for (int w = 0; w < nw; ++w) {
bool producer = (wells_->type[w] == PRODUCER);
const double* comp_frac = &wells_->comp_frac[np*w];
for (int j = wells_->well_connpos[w]; j < wells_->well_connpos[w+1]; ++j) {
const int c = wells_->well_cells[j];
const double* cA = &cell_A_[np*np*c];
double* wpA = &wellperf_A_[np*np*j];
double* wpM = &wellperf_phasemob_[np*j];
if (producer) {
const double* cA = &cell_A_[np*np*c];
std::copy(cA, cA + np*np, wpA);
const double* cM = &cell_phasemob_[np*c];
double* wpM = &wellperf_phasemob_[np*j];
std::copy(cM, cM + np, wpM);
} else {
const double bhp = well_state.bhp()[w];
double perf_p = bhp;
for (int phase = 0; phase < np; ++phase) {
perf_p += wellperf_gpot_[np*j + phase]*comp_frac[phase];
}
// Hack warning: comp_frac is used as a component
// surface-volume variable in calls to matrix() and
// viscosity(), but as a saturation in the call to
// relperm(). This is probably ok as long as injectors
// only inject pure fluids.
props_.matrix(1, &perf_p, comp_frac, &c, wpA, NULL);
props_.viscosity(1, &perf_p, comp_frac, &c, &mu[0], NULL);
ASSERT(std::fabs(std::accumulate(comp_frac, comp_frac + np, 0.0) - 1.0) < 1e-6);
props_.relperm (1, comp_frac, &c, wpM , NULL);
for (int phase = 0; phase < np; ++phase) {
wpM[phase] /= mu[phase];
}
}
}
}
}

9
opm/core/simulator/WellState.hpp
View File

@ -37,11 +37,18 @@ namespace Opm
if (wells) {
const int nw = wells->number_of_wells;
bhp_.resize(nw);
// Initialize bhp to be pressure in first perforation cell.
// Initialize bhp to be target pressure
// if bhp-controlled well, otherwise set
// to pressure in first perforation cell.
for (int w = 0; w < nw; ++w) {
const WellControls* ctrl = wells->ctrls[w];
if (ctrl->type[ctrl->current] == BHP) {
bhp_[w] = ctrl->target[ctrl->current];
} else {
const int cell = wells->well_cells[wells->well_connpos[w]];
bhp_[w] = state.pressure()[cell];
}
}
perfrates_.resize(wells->well_connpos[nw]);
}
}