OilfieldToolsNet/opm-common
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

use 58.44 as molar mass of salt

Browse Source
This commit is contained in:
Tor Harald Sandve 2023-05-04 09:48:03 +02:00
parent 46f5558b59
commit 4f3b67fa77
5 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
examples/co2brinepvt.cpp
View File

@ -93,7 +93,7 @@ int main(int argc, char **argv)
if (argc > 6) if (argc > 6)
rs = atof(argv[6]); rs = atof(argv[6]);
const double MmNaCl = 58e-3; // molar mass of NaCl [kg/mol] const double MmNaCl = 58.44e-3; // molar mass of NaCl [kg/mol]
// convert to mass fraction // convert to mass fraction
std::vector<double> salinity = {0.0}; std::vector<double> salinity = {0.0};
if (molality > 0.0) if (molality > 0.0)

2
opm/material/binarycoefficients/Brine_CO2.hpp
View File

@ -216,7 +216,7 @@ private:
static Evaluation salinityToMolFrac_(const Evaluation& salinity) { static Evaluation salinityToMolFrac_(const Evaluation& salinity) {
const Scalar Mw = H2O::molarMass(); /* molecular weight of water [kg/mol] */ const Scalar Mw = H2O::molarMass(); /* molecular weight of water [kg/mol] */
const Scalar Ms = 58.8e-3; /* molecular weight of NaCl [kg/mol] */ const Scalar Ms = 58.44e-3; /* molecular weight of NaCl [kg/mol] */
const Evaluation X_NaCl = salinity; const Evaluation X_NaCl = salinity;
/* salinity: conversion from mass fraction to mol fraction */ /* salinity: conversion from mass fraction to mol fraction */

7
opm/material/components/BrineDynamic.hpp
View File

@ -79,9 +79,8 @@ public:
static Evaluation molarMass(const Evaluation& salinity) static Evaluation molarMass(const Evaluation& salinity)
{ {
const Scalar M1 = H2O::molarMass(); const Scalar M1 = H2O::molarMass();
constexpr Scalar M2 = 58e-3; // molar mass of NaCl [kg/mol]
const Evaluation X2 = salinity; // mass fraction of salt in brine const Evaluation X2 = salinity; // mass fraction of salt in brine
return M1*M2/(M2 + X2*(M1 - M2)); return M1*mM_salt/(mM_salt + X2*(M1 - mM_salt));
} }
/*! /*!
@ -347,6 +346,10 @@ public:
return mu_brine/1000.0; // convert to [Pa s] (todo: check if correct cP->Pa s is times 10...) return mu_brine/1000.0; // convert to [Pa s] (todo: check if correct cP->Pa s is times 10...)
} }
//Molar mass salt (assumes pure NaCl) [kg/mol]
static constexpr Scalar mM_salt = 58.44e-3;
}; };
} // namespace Opm } // namespace Opm

2
src/opm/material/fluidsystems/BlackOilFluidSystem.cpp
View File

@ -119,7 +119,7 @@ initFromState(const EclipseState& eclState, const Schedule& schedule)
// when we are using the the CO2STORE option // when we are using the the CO2STORE option
if (eclState.runspec().co2Storage()) { if (eclState.runspec().co2Storage()) {
const Scalar molality = eclState.getTableManager().salinity(); // mol/kg const Scalar molality = eclState.getTableManager().salinity(); // mol/kg
const Scalar MmNaCl = 58e-3; // molar mass of NaCl [kg/mol] const Scalar MmNaCl = 58.44e-3; // molar mass of NaCl [kg/mol]
// convert to mass fraction // convert to mass fraction
const Scalar salinity = 1 / ( 1 + 1 / (molality*MmNaCl)); const Scalar salinity = 1 / ( 1 + 1 / (molality*MmNaCl));
for (unsigned regionIdx = 0; regionIdx < numRegions; ++regionIdx) { for (unsigned regionIdx = 0; regionIdx < numRegions; ++regionIdx) {

2
src/opm/material/fluidsystems/blackoilpvt/BrineCo2Pvt.cpp
View File

@ -56,7 +56,7 @@ initFromState(const EclipseState& eclState, const Schedule&)
size_t regionIdx = 0; size_t regionIdx = 0;
// Currently we only support constant salinity // Currently we only support constant salinity
const Scalar molality = eclState.getTableManager().salinity(); // mol/kg const Scalar molality = eclState.getTableManager().salinity(); // mol/kg
const Scalar MmNaCl = 58e-3; // molar mass of NaCl [kg/mol] const Scalar MmNaCl = 58.44e-3; // molar mass of NaCl [kg/mol]
// convert to mass fraction // convert to mass fraction
salinity_[regionIdx] = 1 / ( 1 + 1 / (molality*MmNaCl)); salinity_[regionIdx] = 1 / ( 1 + 1 / (molality*MmNaCl));
// set the surface conditions using the STCOND keyword // set the surface conditions using the STCOND keyword