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Began porting the mapping system

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Emily Boudreaux
2026-09-20 14:37:11 -04:00
parent f69fac8f1e
commit 08a8f231d2
46 changed files with 1336 additions and 115 deletions
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14
src/lib/serif/eos/models/polytropic.cpp
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@@ -104,24 +104,24 @@ namespace serif::eos::models {
};
}
[[nodiscard]] PartialDerivative<Density, SpecificEnthalpy> Polytrope::partial_derivative(DensityFromSpecificEnthalpy, WithRespectTo<SpecificEnthalpy>, const SpecificEnthalpyValue specific_enthalpy) const {
[[nodiscard]] PartialDerivative<MassDensity, SpecificEnthalpy> Polytrope::partial_derivative(DensityFromSpecificEnthalpy, WithRespectTo<SpecificEnthalpy>, const SpecificEnthalpyValue specific_enthalpy) const {
validate_finite<EOSEvaluationError, SERiFErrorCode::EOS_INVALID_THERMODYNAMIC_INPUT>(specific_enthalpy.value());
if (specific_enthalpy.value() < 0.0) {
// dρ/dh = 0
return PartialDerivative<Density, SpecificEnthalpy>{0.0};
return PartialDerivative<MassDensity, SpecificEnthalpy>{0.0};
}
if (specific_enthalpy.value() == 0.0) {
// dρ/dh = n == 1 -> 1/hs
// dρ/dh = else -> 0
return PartialDerivative<Density, SpecificEnthalpy>{
return PartialDerivative<MassDensity, SpecificEnthalpy>{
m_polytropic_index == 1.0 ? 1.0 / m_enthalpy_scale : 0.0
};
}
// dρ/dh = (n/hs) * (h/hs)^(n-1)
return PartialDerivative<Density, SpecificEnthalpy>{
return PartialDerivative<MassDensity, SpecificEnthalpy>{
m_polytropic_index / m_enthalpy_scale * std::pow(specific_enthalpy.value() / m_enthalpy_scale, m_polytropic_index - 1.0)
};
}
@@ -133,16 +133,16 @@ namespace serif::eos::models {
return PartialDerivative<Pressure, SpecificEnthalpy>{density.value()};
}
[[nodiscard]] PartialDerivative<Pressure, Density> Polytrope::partial_derivative(PressureFromDensity, WithRespectTo<Density>, const DensityValue density) const {
[[nodiscard]] PartialDerivative<Pressure, MassDensity> Polytrope::partial_derivative(PressureFromDensity, WithRespectTo<MassDensity>, const DensityValue density) const {
validate_nonnegativity<EOSEvaluationError, SERiFErrorCode::EOS_INVALID_THERMODYNAMIC_INPUT>(density.value());
if (density.value() == 0.0) {
// dP/dρ = 0
return PartialDerivative<Pressure, Density>{0.0};
return PartialDerivative<Pressure, MassDensity>{0.0};
}
// dP/dρ = K * (1 + 1/n) * (ρ)^(1/n)
return PartialDerivative<Pressure, Density>{
return PartialDerivative<Pressure, MassDensity>{
m_polytropic_constant * (1.0 + 1.0 / m_polytropic_index) * std::pow(density.value(), 1.0 / m_polytropic_index)
};
}