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Modified functions dealing with transport source.

Browse Source 
In preparation for switching to new convention for inflow
sources in the compressible case: source being surface volumes,
not reservoir volumes.
This commit is contained in:
Atgeirr Flø Rasmussen 2012-10-01 16:40:47 +02:00
parent 6fb248d403
commit 17c1be6541
2 changed files with 93 additions and 4 deletions
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78
opm/core/utility/miscUtilitiesBlackoil.cpp
View File

@ -21,7 +21,10 @@
#include <opm/core/utility/miscUtilitiesBlackoil.hpp>
#include <opm/core/utility/Units.hpp>
#include <opm/core/grid.h>
#include <opm/core/newwells.h>
#include <opm/core/fluid/BlackoilPropertiesInterface.hpp>
#include <opm/core/simulator/BlackoilState.hpp>
#include <opm/core/simulator/WellState.hpp>
#include <opm/core/utility/ErrorMacros.hpp>
#include <algorithm>
#include <functional>
@ -31,16 +34,20 @@
namespace Opm
{
/// @brief Computes injected and produced volumes of all phases.
/// @brief Computes injected and produced surface volumes of all phases.
/// Note 1: assumes that only the first phase is injected.
/// Note 2: assumes that transport has been done with an
/// implicit method, i.e. that the current state
/// gives the mobilities used for the preceding timestep.
/// Note 3: Gives surface volume values, not reservoir volumes
/// (as the incompressible version of the function does).
/// Also, assumes that src is given in surface volumes
/// for injector terms!
/// @param[in] props fluid and rock properties.
/// @param[in] p pressure (one value per cell)
/// @param[in] z surface-volume values (for all P phases)
/// @param[in] s saturation values (for all P phases)
/// @param[in] src if < 0: total outflow, if > 0: first phase inflow.
/// @param[in] src if < 0: total outflow, if > 0: first phase inflow
/// @param[in] dt timestep used
/// @param[out] injected must point to a valid array with P elements,
/// where P = s.size()/src.size().
@ -63,6 +70,9 @@ namespace Opm
std::fill(produced, produced + np, 0.0);
std::vector<double> visc(np);
std::vector<double> mob(np);
std::vector<double> A(np*np);
std::vector<double> prod_resv_phase(np);
std::vector<double> prod_surfvol(np);
for (int c = 0; c < num_cells; ++c) {
if (src[c] > 0.0) {
injected[0] += src[c]*dt;
@ -71,13 +81,21 @@ namespace Opm
const double* sat = &s[np*c];
props.relperm(1, sat, &c, &mob[0], 0);
props.viscosity(1, &press[c], &z[np*c], &c, &visc[0], 0);
props.matrix(1, &press[c], &z[np*c], &c, &A[0], 0);
double totmob = 0.0;
for (int p = 0; p < np; ++p) {
mob[p] /= visc[p];
totmob += mob[p];
}
std::fill(prod_surfvol.begin(), prod_surfvol.end(), 0.0);
for (int p = 0; p < np; ++p) {
produced[p] += (mob[p]/totmob)*flux;
prod_resv_phase[p] = (mob[p]/totmob)*flux;
for (int q = 0; q < np; ++q) {
prod_surfvol[q] += prod_resv_phase[p]*A[q + np*p];
}
}
for (int p = 0; p < np; ++p) {
produced[p] += prod_surfvol[p];
}
}
}
@ -251,4 +269,58 @@ namespace Opm
}
}
/// Compute two-phase transport source terms from well terms.
/// Note: Unlike the incompressible version of this function,
/// this version computes surface volume injection rates,
/// production rates are still total reservoir volumes.
/// \param[in] props Fluid and rock properties.
/// \param[in] wells Wells data structure.
/// \param[in] well_state Well pressures and fluxes.
/// \param[out] transport_src The transport source terms. They are to be interpreted depending on sign:
/// (+) positive inflow of first (water) phase (surface volume),
/// (-) negative total outflow of both phases (reservoir volume).
void computeTransportSource(const BlackoilPropertiesInterface& props,
const Wells* wells,
const WellState& well_state,
std::vector<double>& transport_src)
{
int nc = props.numCells();
transport_src.clear();
transport_src.resize(nc, 0.0);
// Well contributions.
if (wells) {
const int nw = wells->number_of_wells;
const int np = wells->number_of_phases;
if (np != 2) {
THROW("computeTransportSource() requires a 2 phase case.");
}
std::vector<double> A(np, np);
for (int w = 0; w < nw; ++w) {
const double* comp_frac = wells->comp_frac + np*w;
for (int perf = wells->well_connpos[w]; perf < wells->well_connpos[w + 1]; ++perf) {
const int perf_cell = wells->well_cells[perf];
double perf_rate = well_state.perfRates()[perf];
if (perf_rate > 0.0) {
// perf_rate is a total inflow reservoir rate, we want a surface water rate.
if (wells->type[w] != INJECTOR) {
std::cout << "**** Warning: crossflow in well "
<< w << " perf " << perf - wells->well_connpos[w]
<< " ignored. Reservoir rate was "
<< perf_rate/Opm::unit::day << " m^3/day." << std::endl;
perf_rate = 0.0;
} else {
ASSERT(std::fabs(comp_frac[0] + comp_frac[1] - 1.0) < 1e-6);
perf_rate *= comp_frac[0]; // Water reservoir volume rate.
props.matrix(1, &well_state.perfPress()[perf], comp_frac, &perf_cell, &A[0], 0);
perf_rate *= A[0]; // Water surface volume rate.
}
}
transport_src[perf_cell] += perf_rate;
}
}
}
}
} // namespace Opm

19
opm/core/utility/miscUtilitiesBlackoil.hpp
View File

@ -22,12 +22,13 @@
#include <vector>
struct UnstructuredGrid;
struct Wells;
namespace Opm
{
class BlackoilPropertiesInterface;
class WellState;
/// @brief Computes injected and produced volumes of all phases.
/// Note 1: assumes that only the first phase is injected.
@ -131,6 +132,22 @@ namespace Opm
const double* saturation,
double* surfacevol);
/// Compute two-phase transport source terms from well terms.
/// Note: Unlike the incompressible version of this function,
/// this version computes surface volume injection rates,
/// production rates are still total reservoir volumes.
/// \param[in] props Fluid and rock properties.
/// \param[in] wells Wells data structure.
/// \param[in] well_state Well pressures and fluxes.
/// \param[out] transport_src The transport source terms. They are to be interpreted depending on sign:
/// (+) positive inflow of first (water) phase (surface volume),
/// (-) negative total outflow of both phases (reservoir volume).
void computeTransportSource(const BlackoilPropertiesInterface& props,
const Wells* wells,
const WellState& well_state,
std::vector<double>& transport_src);
} // namespace Opm
#endif // OPM_MISCUTILITIESBLACKOIL_HEADER_INCLUDED