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feat(newton): first newton solver implementation

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Emily Boudreaux
2026-09-08 06:36:39 -04:00
parent 76818f2f82
commit b3c04d507a
98 changed files with 20397 additions and 11040 deletions
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19
libmeanfield/impl/seed/stellar_equilibrium_projection.cpp
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@@ -182,12 +182,11 @@ namespace mean_field::seed::detail {
double radialMomentIntegral = 0.0;
for (int index = 0; index + 1 < profile.radius.Size(); ++index) {
const double leftRadius = profile.radius(index);
const double rightRadius = profile.radius(index + 1);
const double leftIntegrand = profile.density(index) * std::pow(leftRadius, 4);
const double leftRadius = profile.radius(index);
const double rightRadius = profile.radius(index + 1);
const double leftIntegrand = profile.density(index) * std::pow(leftRadius, 4);
const double rightIntegrand = profile.density(index + 1) * std::pow(rightRadius, 4);
radialMomentIntegral +=
0.5 * (rightRadius - leftRadius) * (leftIntegrand + rightIntegrand);
radialMomentIntegral += 0.5 * (rightRadius - leftRadius) * (leftIntegrand + rightIntegrand);
}
const double sphericalMomentOfInertia = (8.0 * std::numbers::pi / 3.0) * radialMomentIntegral;
if (!std::isfinite(sphericalMomentOfInertia) || sphericalMomentOfInertia <= 0.0) {
@@ -208,11 +207,11 @@ namespace mean_field::seed::detail {
);
return {
.density = densityAdapter.gather(densityField),
.gravityGradient = gravityFluxAdapter.gather(gravitySolution.gradPhi),
.gravityPotential = gravityPotentialAdapter.gather(gravitySolution.phi),
.specificEnthalpy = enthalpyAdapter.gather(enthalpyField),
.bernoulliConstant = -utils::G * targetMass.value() / targetRadius,
.density = densityAdapter.gather(densityField),
.gravityGradient = gravityFluxAdapter.gather(gravitySolution.gradPhi),
.gravityPotential = gravityPotentialAdapter.gather(gravitySolution.phi),
.specificEnthalpy = enthalpyAdapter.gather(enthalpyField),
.bernoulliConstant = -utils::G * targetMass.value() / targetRadius,
.sphericalMomentOfInertia = sphericalMomentOfInertia
};
}