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Fix set_reference_stateD(); closes #1091

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Now all inputs are molar, and the function actually works!
This commit is contained in:
Ian Bell
2016-06-05 15:16:02 -06:00
parent f7ef611f50
commit 154de451fe
4 changed files with 13 additions and 14 deletions
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13
src/CoolProp.cpp
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@@ -828,7 +828,7 @@ void set_reference_stateS(const std::string &fluid_string, const std::string &re
}
}
}
void set_reference_stateD(const std::string &Ref, double T, double rhomolar, double h0, double s0)
void set_reference_stateD(const std::string &Ref, double T, double rhomolar, double hmass0, double smass0)
{
std::vector<std::string> _comps(1, Ref);
CoolProp::HelmholtzEOSMixtureBackend HEOS(_comps);
@@ -836,12 +836,11 @@ void set_reference_stateD(const std::string &Ref, double T, double rhomolar, dou
HEOS.update(DmolarT_INPUTS, rhomolar, T);
// Get current values for the enthalpy and entropy
double deltah = HEOS.hmass() - h0; // offset from specified enthalpy in J/mol
double deltas = HEOS.smass() - s0; // offset from specified entropy in J/mol/K
double delta_a1 = deltas/(8.314472/HEOS.molar_mass());
double delta_a2 = -deltah/(8.314472/HEOS.molar_mass()*HEOS.get_reducing_state().T);
HEOS.get_components()[0].EOS().alpha0.EnthalpyEntropyOffset.set(delta_a1, delta_a2, "custom");
HEOS.update_states();
double deltah = HEOS.hmass() - hmass0; // offset from specified enthalpy in J/kg
double deltas = HEOS.smass() - smass0; // offset from specified entropy in J/kg/K
double delta_a1 = deltas/(HEOS.gas_constant()/HEOS.molar_mass());
double delta_a2 = -deltah/(HEOS.gas_constant()/HEOS.molar_mass()*HEOS.get_reducing_state().T);
set_fluid_enthalpy_entropy_offset(Ref, delta_a1, delta_a2, "custom");
}