feat(libmeanfield): centrifugal + pressure

This commit is contained in:
2026-08-04 14:24:55 -04:00
parent 9bc4f2758a
commit dc912fd15e
115 changed files with 260058 additions and 163261 deletions

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module;
#include <algorithm>
#include <array>
#include <cmath>
#include <mfem.hpp>
#include <optional>
module mean_field;
import :operators.kernels.hydrostatic_equilibrium;
namespace {
void true_to_local(
const mfem::ParFiniteElementSpace &finiteElementSpace,
const mfem::Vector &trueVector,
mfem::Vector &localVector
) {
MFEM_VERIFY(
trueVector.Size() == finiteElementSpace.GetTrueVSize(),
"True vector has the wrong size."
);
localVector.SetSize(finiteElementSpace.GetVSize());
const mfem::Operator *prolongation =
finiteElementSpace.GetProlongationMatrix();
if (prolongation != nullptr) {
prolongation->Mult(trueVector, localVector);
} else {
localVector = trueVector;
}
}
void local_to_true(
const mfem::ParFiniteElementSpace &finiteElementSpace,
const mfem::Vector &localVector,
mfem::Vector &trueVector
) {
MFEM_VERIFY(
localVector.Size() == finiteElementSpace.GetVSize(),
"Local vector has the wrong size."
);
trueVector.SetSize(finiteElementSpace.GetTrueVSize());
trueVector = 0.0;
const mfem::Operator *prolongation =
finiteElementSpace.GetProlongationMatrix();
if (prolongation != nullptr) {
prolongation->MultTranspose(localVector, trueVector);
} else {
trueVector = localVector;
}
}
void validate_fem(
const mean_field::fem::FEM &f,
const mean_field::mapping::DomainMapperStateless &domainMapper
) {
MFEM_VERIFY(
f.mesh != nullptr, "The hydrostatic kernel requires a mesh."
);
MFEM_VERIFY(
f.enthalpyFes != nullptr, "The hydrostatic kernel requires the "
"enthalpy finite-element space."
);
MFEM_VERIFY(
f.gravityPotentialFes != nullptr,
"The hydrostatic kernel requires the "
"gravity-potential finite-element space."
);
MFEM_VERIFY(
f.displacementFes != nullptr, "The hydrostatic kernel requires the "
"displacement finite-element space."
);
MFEM_VERIFY(
f.compactificationFes != nullptr,
"The hydrostatic kernel requires the "
"compactification finite-element space."
);
MFEM_VERIFY(
f.compactificationCoordinate != nullptr,
"The hydrostatic kernel requires the "
"compactification coordinate."
);
MFEM_VERIFY(
f.quadratureFactory != nullptr,
"The hydrostatic kernel requires the "
"quadrature-rule factory."
);
MFEM_VERIFY(
f.mesh->Dimension() == 3,
"The rigid-rotation hydrostatic kernel "
"currently requires a three-dimensional mesh."
);
MFEM_VERIFY(
domainMapper.GetDimension() == f.mesh->Dimension(),
"The domain-mapper dimension does not match "
"the mesh dimension."
);
}
const mfem::IntegrationRule &get_hydrostatic_rule(
const mean_field::fem::FEM &f,
const mfem::FiniteElement &enthalpyElement,
const mfem::FiniteElement &potentialElement,
const mfem::ElementTransformation &transformation
) {
using EnthalpyField =
mean_field::field::Field<mean_field::field::Enthalpy>;
MFEM_VERIFY(
enthalpyElement.GetOrder() ==
mean_field::field::Enthalpy::Scalar::familyOrder,
"The hydrostatic test element does not match "
"the registered enthalpy field."
);
MFEM_VERIFY(
potentialElement.GetOrder() ==
mean_field::field::Gravity::Potential::familyOrder,
"The hydrostatic potential element does not "
"match the registered gravity-potential field."
);
const auto enthalpyQuery = EnthalpyField::make_query<
mean_field::field::Enthalpy::Form::EquilibriumEnthalpy>(
mean_field::quadrature::QuadratureRole::discretization,
transformation.OrderW(), {}, mean_field::utils::DOMAINS::STELLAR,
mean_field::quadrature::MappingKind::general
);
const auto gravityQuery = EnthalpyField::make_query<
mean_field::field::Enthalpy::Form::EquilibriumGravity>(
mean_field::quadrature::QuadratureRole::discretization,
transformation.OrderW(), {}, mean_field::utils::DOMAINS::STELLAR,
mean_field::quadrature::MappingKind::general
);
const auto rotationQuery = EnthalpyField::make_query<
mean_field::field::Enthalpy::Form::EquilibriumRotation>(
mean_field::quadrature::QuadratureRole::discretization,
transformation.OrderW(), std::array<int, 1>{2},
mean_field::utils::DOMAINS::STELLAR,
mean_field::quadrature::MappingKind::general
);
const auto constantQuery = EnthalpyField::make_query<
mean_field::field::Enthalpy::Form::EquilibriumConstant>(
mean_field::quadrature::QuadratureRole::discretization,
transformation.OrderW(), {}, mean_field::utils::DOMAINS::STELLAR,
mean_field::quadrature::MappingKind::general
);
int integrationOrder = 0;
const auto update_order = [&f, &transformation, &integrationOrder](
const mean_field::quadrature::Query &query
) {
const auto rule = f.quadratureFactory->get(
query, transformation.GetGeometryType()
);
MFEM_VERIFY(
rule.integration_rule != nullptr,
"The quadrature policy did not return "
"a hydrostatic-equilibrium rule."
);
integrationOrder =
std::max(integrationOrder, rule.resolution.order);
};
update_order(enthalpyQuery);
update_order(gravityQuery);
update_order(rotationQuery);
update_order(constantQuery);
return mfem::IntRules.Get(
transformation.GetGeometryType(), integrationOrder
);
}
struct HydrostaticAssemblyRequest {
const mean_field::physics::RigidRotation *rotation{nullptr};
const mfem::Vector *baseEnthalpyTrue{nullptr};
const mfem::Vector *basePotentialTrue{nullptr};
const mfem::Vector *enthalpyVariationTrue{nullptr};
const mfem::Vector *potentialVariationTrue{nullptr};
const mfem::Vector *displacementVariationTrue{nullptr};
double bernoulliConstant{0.0};
double constantVariation{0.0};
bool buildResidual{false};
};
void assemble_hydrostatic_form(
const mean_field::fem::FEM &f,
const mean_field::mapping::DomainMapperStateless &domainMapper,
const mfem::Vector &displacementTrue,
const HydrostaticAssemblyRequest &request,
mfem::Vector &result
) {
validate_fem(f, domainMapper);
MFEM_VERIFY(
displacementTrue.Size() == f.displacementFes->GetTrueVSize(),
"The hydrostatic displacement vector has "
"the wrong size."
);
MFEM_VERIFY(
std::isfinite(request.bernoulliConstant),
"The Bernoulli constant is non-finite."
);
MFEM_VERIFY(
std::isfinite(request.constantVariation),
"The Bernoulli-constant variation is non-finite."
);
const bool requiresBaseState =
request.buildResidual ||
request.displacementVariationTrue != nullptr;
if (requiresBaseState) {
MFEM_VERIFY(
request.rotation != nullptr,
"The hydrostatic residual or geometry "
"action requires the rotation model."
);
MFEM_VERIFY(
request.baseEnthalpyTrue != nullptr,
"The hydrostatic residual or geometry "
"action requires the base enthalpy."
);
MFEM_VERIFY(
request.basePotentialTrue != nullptr,
"The hydrostatic residual or geometry "
"action requires the base potential."
);
}
if (request.baseEnthalpyTrue != nullptr) {
MFEM_VERIFY(
request.baseEnthalpyTrue->Size() ==
f.enthalpyFes->GetTrueVSize(),
"The base enthalpy vector has the wrong size."
);
}
if (request.basePotentialTrue != nullptr) {
MFEM_VERIFY(
request.basePotentialTrue->Size() ==
f.gravityPotentialFes->GetTrueVSize(),
"The base potential vector has the wrong size."
);
}
if (request.enthalpyVariationTrue != nullptr) {
MFEM_VERIFY(
request.enthalpyVariationTrue->Size() ==
f.enthalpyFes->GetTrueVSize(),
"The enthalpy variation has the wrong size."
);
}
if (request.potentialVariationTrue != nullptr) {
MFEM_VERIFY(
request.potentialVariationTrue->Size() ==
f.gravityPotentialFes->GetTrueVSize(),
"The potential variation has the wrong size."
);
}
if (request.displacementVariationTrue != nullptr) {
MFEM_VERIFY(
request.displacementVariationTrue->Size() ==
f.displacementFes->GetTrueVSize(),
"The displacement variation has the wrong size."
);
}
mfem::Vector displacementLocal;
true_to_local(*f.displacementFes, displacementTrue, displacementLocal);
mfem::Vector baseEnthalpyLocal;
mfem::Vector basePotentialLocal;
mfem::Vector enthalpyVariationLocal;
mfem::Vector potentialVariationLocal;
mfem::Vector displacementVariationLocal;
if (request.baseEnthalpyTrue != nullptr) {
true_to_local(
*f.enthalpyFes, *request.baseEnthalpyTrue, baseEnthalpyLocal
);
}
if (request.basePotentialTrue != nullptr) {
true_to_local(
*f.gravityPotentialFes, *request.basePotentialTrue,
basePotentialLocal
);
}
if (request.enthalpyVariationTrue != nullptr) {
true_to_local(
*f.enthalpyFes, *request.enthalpyVariationTrue,
enthalpyVariationLocal
);
}
if (request.potentialVariationTrue != nullptr) {
true_to_local(
*f.gravityPotentialFes, *request.potentialVariationTrue,
potentialVariationLocal
);
}
if (request.displacementVariationTrue != nullptr) {
true_to_local(
*f.displacementFes, *request.displacementVariationTrue,
displacementVariationLocal
);
}
mfem::Vector localResult(f.enthalpyFes->GetVSize());
localResult = 0.0;
mean_field::mapping::DomainMapperStateless::Workspace workspace(
f.mesh->Dimension()
);
mfem::Array<int> enthalpyDofs;
mfem::Array<int> potentialDofs;
mfem::Array<int> displacementDofs;
mfem::Array<int> compactificationDofs;
mfem::Vector elementBaseEnthalpy;
mfem::Vector elementBasePotential;
mfem::Vector elementEnthalpyVariation;
mfem::Vector elementPotentialVariation;
mfem::Vector elementDisplacement;
mfem::Vector elementDisplacementVariation;
mfem::Vector elementCompactification;
mfem::Vector elementResult;
mfem::Vector enthalpyShape;
mfem::Vector potentialShape;
const int vacuumAttribute = domainMapper.GetVacuumElementAttribute();
for (int elementId = 0; elementId < f.mesh->GetNE(); ++elementId) {
mfem::ElementTransformation *transformation =
f.mesh->GetElementTransformation(elementId);
MFEM_VERIFY(
transformation != nullptr,
"The hydrostatic kernel received a null "
"element transformation."
);
if (transformation->Attribute == vacuumAttribute) {
continue;
}
const mfem::FiniteElement &enthalpyElement =
*f.enthalpyFes->GetFE(elementId);
const mfem::FiniteElement &potentialElement =
*f.gravityPotentialFes->GetFE(elementId);
const mfem::FiniteElement &displacementElement =
*f.displacementFes->GetFE(elementId);
const mfem::FiniteElement &compactificationElement =
*f.compactificationFes->GetFE(elementId);
mfem::DofTransformation *enthalpyDofTransformation =
f.enthalpyFes->GetElementDofs(elementId, enthalpyDofs);
mfem::DofTransformation *potentialDofTransformation =
f.gravityPotentialFes->GetElementDofs(elementId, potentialDofs);
mfem::DofTransformation *displacementDofTransformation =
f.displacementFes->GetElementVDofs(elementId, displacementDofs);
mfem::DofTransformation *compactificationDofTransformation =
f.compactificationFes->GetElementDofs(
elementId, compactificationDofs
);
displacementLocal.GetSubVector(
displacementDofs, elementDisplacement
);
f.compactificationCoordinate->GetSubVector(
compactificationDofs, elementCompactification
);
if (request.baseEnthalpyTrue != nullptr) {
baseEnthalpyLocal.GetSubVector(
enthalpyDofs, elementBaseEnthalpy
);
}
if (request.basePotentialTrue != nullptr) {
basePotentialLocal.GetSubVector(
potentialDofs, elementBasePotential
);
}
if (request.enthalpyVariationTrue != nullptr) {
enthalpyVariationLocal.GetSubVector(
enthalpyDofs, elementEnthalpyVariation
);
}
if (request.potentialVariationTrue != nullptr) {
potentialVariationLocal.GetSubVector(
potentialDofs, elementPotentialVariation
);
}
if (request.displacementVariationTrue != nullptr) {
displacementVariationLocal.GetSubVector(
displacementDofs, elementDisplacementVariation
);
}
if (enthalpyDofTransformation != nullptr) {
if (request.baseEnthalpyTrue != nullptr) {
enthalpyDofTransformation->InvTransformPrimal(
elementBaseEnthalpy
);
}
if (request.enthalpyVariationTrue != nullptr) {
enthalpyDofTransformation->InvTransformPrimal(
elementEnthalpyVariation
);
}
}
if (potentialDofTransformation != nullptr) {
if (request.basePotentialTrue != nullptr) {
potentialDofTransformation->InvTransformPrimal(
elementBasePotential
);
}
if (request.potentialVariationTrue != nullptr) {
potentialDofTransformation->InvTransformPrimal(
elementPotentialVariation
);
}
}
if (displacementDofTransformation != nullptr) {
displacementDofTransformation->InvTransformPrimal(
elementDisplacement
);
if (request.displacementVariationTrue != nullptr) {
displacementDofTransformation->InvTransformPrimal(
elementDisplacementVariation
);
}
}
if (compactificationDofTransformation != nullptr) {
compactificationDofTransformation->InvTransformPrimal(
elementCompactification
);
}
const mean_field::mapping::ElementDisplacementData
displacementData = mean_field::mapping::
ElementDisplacementDataFromElementVDofs(
displacementElement, elementDisplacement
);
const mean_field::mapping::ElementCompactificationData
compactificationData(
compactificationElement, elementCompactification
);
const mean_field::mapping::ElementMappingData mappingData{
.displacement = displacementData,
.compactification = compactificationData
};
std::optional<mean_field::mapping::ElementDisplacementData>
displacementVariationData;
if (request.displacementVariationTrue != nullptr) {
displacementVariationData.emplace(
mean_field::mapping::
ElementDisplacementDataFromElementVDofs(
displacementElement, elementDisplacementVariation
)
);
}
elementResult.SetSize(enthalpyElement.GetDof());
elementResult = 0.0;
enthalpyShape.SetSize(enthalpyElement.GetDof());
potentialShape.SetSize(potentialElement.GetDof());
const mfem::IntegrationRule &integrationRule = get_hydrostatic_rule(
f, enthalpyElement, potentialElement, *transformation
);
for (int quadraturePoint = 0;
quadraturePoint < integrationRule.GetNPoints();
++quadraturePoint) {
const mfem::IntegrationPoint &integrationPoint =
integrationRule.IntPoint(quadraturePoint);
transformation->SetIntPoint(&integrationPoint);
mean_field::mapping::VolumeMappingContext mappingContext;
const mean_field::mapping::MappingStatus mappingStatus =
domainMapper.EvaluateVolume(
mappingData, *transformation, integrationPoint,
workspace, mappingContext
);
MFEM_VERIFY(
mappingStatus == mean_field::mapping::MappingStatus::valid,
"The base mapping is invalid in the "
"hydrostatic kernel. Element: "
<< elementId
<< ", quadrature point: " << quadraturePoint
<< ", status: " << static_cast<int>(mappingStatus)
);
enthalpyElement.CalcShape(integrationPoint, enthalpyShape);
potentialElement.CalcShape(integrationPoint, potentialShape);
double baseIntegrand = 0.0;
if (requiresBaseState) {
const double enthalpyValue =
elementBaseEnthalpy * enthalpyShape;
const double potentialValue =
elementBasePotential * potentialShape;
const double rotationPotential =
request.rotation->potential(
mappingContext.mapping.physical_position
);
baseIntegrand = enthalpyValue + potentialValue -
rotationPotential -
request.bernoulliConstant;
}
if (request.buildResidual) {
elementResult.Add(
mappingContext.quadrature.weight * baseIntegrand,
enthalpyShape
);
continue;
}
double materialVariation = -request.constantVariation;
if (request.enthalpyVariationTrue != nullptr) {
materialVariation +=
elementEnthalpyVariation * enthalpyShape;
}
if (request.potentialVariationTrue != nullptr) {
materialVariation +=
elementPotentialVariation * potentialShape;
}
double weightedVariation =
mappingContext.quadrature.weight * materialVariation;
if (request.displacementVariationTrue != nullptr) {
mean_field::mapping::VolumeMappingVariation
mappingVariation;
const mean_field::mapping::MappingStatus variationStatus =
domainMapper.EvaluateVolumeVariation(
mappingData, *displacementVariationData,
*transformation, integrationPoint, mappingContext,
workspace, mappingVariation
);
MFEM_VERIFY(
variationStatus ==
mean_field::mapping::MappingStatus::valid,
"The mapping variation is invalid "
"in the hydrostatic kernel."
);
const double rotationVariation =
request.rotation->potential_directional_derivative(
mappingContext.mapping.physical_position,
mappingVariation.mapping.physical_position_variation
);
weightedVariation +=
baseIntegrand * mappingVariation.weight_variation -
rotationVariation * mappingContext.quadrature.weight;
}
elementResult.Add(weightedVariation, enthalpyShape);
}
if (enthalpyDofTransformation != nullptr) {
enthalpyDofTransformation->TransformDual(elementResult);
}
localResult.AddElementVector(enthalpyDofs, elementResult);
}
local_to_true(*f.enthalpyFes, localResult, result);
}
} // namespace
namespace mean_field::operators::kernels {
void apply_hydrostatic_equilibrium(
const fem::FEM &f,
const mapping::DomainMapperStateless &domainMapper,
const physics::RigidRotation &rotation,
const mfem::Vector &enthalpyTrue,
const mfem::Vector &potentialTrue,
const mfem::Vector &displacementTrue,
const double bernoulliConstant,
mfem::Vector &residual
) {
HydrostaticAssemblyRequest request;
request.rotation = &rotation;
request.baseEnthalpyTrue = &enthalpyTrue;
request.basePotentialTrue = &potentialTrue;
request.bernoulliConstant = bernoulliConstant;
request.buildResidual = true;
assemble_hydrostatic_form(
f, domainMapper, displacementTrue, request, residual
);
}
void apply_hydrostatic_equilibrium_enthalpy_action(
const fem::FEM &f,
const mapping::DomainMapperStateless &domainMapper,
const mfem::Vector &enthalpyVariationTrue,
const mfem::Vector &displacementTrue,
mfem::Vector &action
) {
HydrostaticAssemblyRequest request;
request.enthalpyVariationTrue = &enthalpyVariationTrue;
assemble_hydrostatic_form(
f, domainMapper, displacementTrue, request, action
);
}
void apply_hydrostatic_equilibrium_potential_action(
const fem::FEM &f,
const mapping::DomainMapperStateless &domainMapper,
const mfem::Vector &potentialVariationTrue,
const mfem::Vector &displacementTrue,
mfem::Vector &action
) {
HydrostaticAssemblyRequest request;
request.potentialVariationTrue = &potentialVariationTrue;
assemble_hydrostatic_form(
f, domainMapper, displacementTrue, request, action
);
}
void apply_hydrostatic_equilibrium_constant_action(
const fem::FEM &f,
const mapping::DomainMapperStateless &domainMapper,
const double constantVariation,
const mfem::Vector &displacementTrue,
mfem::Vector &action
) {
HydrostaticAssemblyRequest request;
request.constantVariation = constantVariation;
assemble_hydrostatic_form(
f, domainMapper, displacementTrue, request, action
);
}
void apply_hydrostatic_equilibrium_displacement_action(
const fem::FEM &f,
const mapping::DomainMapperStateless &domainMapper,
const physics::RigidRotation &rotation,
const mfem::Vector &baseEnthalpyTrue,
const mfem::Vector &basePotentialTrue,
const mfem::Vector &baseDisplacementTrue,
const double baseBernoulliConstant,
const mfem::Vector &displacementVariationTrue,
mfem::Vector &action
) {
HydrostaticAssemblyRequest request;
request.rotation = &rotation;
request.baseEnthalpyTrue = &baseEnthalpyTrue;
request.basePotentialTrue = &basePotentialTrue;
request.displacementVariationTrue = &displacementVariationTrue;
request.bernoulliConstant = baseBernoulliConstant;
assemble_hydrostatic_form(
f, domainMapper, baseDisplacementTrue, request, action
);
}
void apply_hydrostatic_equilibrium_action(
const fem::FEM &f,
const mapping::DomainMapperStateless &domainMapper,
const physics::RigidRotation &rotation,
const mfem::Vector &baseEnthalpyTrue,
const mfem::Vector &basePotentialTrue,
const mfem::Vector &baseDisplacementTrue,
const double baseBernoulliConstant,
const mfem::Vector &enthalpyVariationTrue,
const mfem::Vector &potentialVariationTrue,
const double constantVariation,
const mfem::Vector &displacementVariationTrue,
mfem::Vector &action
) {
HydrostaticAssemblyRequest request;
request.rotation = &rotation;
request.baseEnthalpyTrue = &baseEnthalpyTrue;
request.basePotentialTrue = &basePotentialTrue;
request.enthalpyVariationTrue = &enthalpyVariationTrue;
request.potentialVariationTrue = &potentialVariationTrue;
request.displacementVariationTrue = &displacementVariationTrue;
request.bernoulliConstant = baseBernoulliConstant;
request.constantVariation = constantVariation;
assemble_hydrostatic_form(
f, domainMapper, baseDisplacementTrue, request, action
);
}
} // namespace mean_field::operators::kernels