287 lines
9.7 KiB
C++
287 lines
9.7 KiB
C++
module;
|
|
#include <array>
|
|
#include <mfem.hpp>
|
|
|
|
module mean_field;
|
|
import :mapping.coefficients;
|
|
|
|
namespace {
|
|
template <typename FormT>
|
|
const mfem::IntegrationRule &get_density_rule(
|
|
const mean_field::fem::FEM &fem,
|
|
const mfem::ElementTransformation &transformation,
|
|
const std::array<
|
|
int,
|
|
FormT::dynamicOrderCount> &dynamic_orders = {},
|
|
const mean_field::utils::DOMAINS domain =
|
|
mean_field::utils::DOMAINS::ALL
|
|
) {
|
|
using DensityField =
|
|
mean_field::field::Field<mean_field::field::Density>;
|
|
|
|
const mean_field::quadrature::Query query =
|
|
DensityField::make_query<FormT>(
|
|
mean_field::quadrature::QuadratureRole::diagnostic,
|
|
transformation.OrderW(), dynamic_orders, domain,
|
|
fem.has_mapping() ? mean_field::quadrature::MappingKind::general
|
|
: mean_field::quadrature::MappingKind::none
|
|
);
|
|
|
|
return *fem.quadratureFactory
|
|
->get(query, transformation.GetGeometryType())
|
|
.integration_rule;
|
|
}
|
|
} // namespace
|
|
|
|
namespace mean_field::analysis {
|
|
double domain_integrate_grid_function(
|
|
const fem::FEM &fem,
|
|
const mfem::GridFunction &gf,
|
|
utils::DOMAINS domain,
|
|
mapping::COORDINATE_SPACE coord_space
|
|
) {
|
|
mfem::LinearForm lf(fem.densityFes.get());
|
|
mfem::GridFunctionCoefficient gf_c(&gf);
|
|
double local_integral;
|
|
mfem::Array<int> elem_markers;
|
|
populate_element_mask(fem.mesh.get(), domain, elem_markers);
|
|
const mfem::ElementTransformation &representative_transformation =
|
|
*fem.mesh->GetElementTransformation(0);
|
|
const mfem::IntegrationRule &integration_rule =
|
|
get_density_rule<field::Density::Form::MassConservation>(
|
|
fem, representative_transformation, {}, domain
|
|
);
|
|
|
|
if (fem.has_mapping() &&
|
|
coord_space == mapping::COORDINATE_SPACE::PHYSICAL) {
|
|
mapping::MappedScalarCoefficient mapped_gf_c(*fem.mapping, gf_c);
|
|
|
|
// ReSharper disable once CppDFAMemoryLeak // Disabled because MFEM
|
|
// takes ownership so memory is not leaked
|
|
auto *lf_integrator = new mfem::DomainLFIntegrator(mapped_gf_c);
|
|
lf_integrator->SetIntRule(&integration_rule);
|
|
lf.AddDomainIntegrator(lf_integrator, elem_markers);
|
|
lf.Assemble();
|
|
|
|
local_integral = lf.Sum();
|
|
} else {
|
|
if (coord_space == mapping::COORDINATE_SPACE::PHYSICAL) {
|
|
MFEM_ABORT(
|
|
"Physical evaluation mode requested but no mapping "
|
|
"provided. Check "
|
|
"domain bounds and mapping setup."
|
|
);
|
|
}
|
|
auto *lf_integrator = new mfem::DomainLFIntegrator(gf_c);
|
|
lf_integrator->SetIntRule(&integration_rule);
|
|
lf.AddDomainIntegrator(lf_integrator, elem_markers);
|
|
lf.Assemble();
|
|
local_integral = lf.Sum();
|
|
}
|
|
|
|
double global_integral = 0.0;
|
|
MPI_Allreduce(
|
|
&local_integral, &global_integral, 1, MPI_DOUBLE, MPI_SUM,
|
|
fem.mesh->GetComm()
|
|
);
|
|
return global_integral;
|
|
}
|
|
|
|
mfem::Vector get_com(
|
|
const fem::FEM &fem,
|
|
const mfem::GridFunction &rho
|
|
) {
|
|
const int dim = fem.mesh->Dimension();
|
|
mfem::Vector local_com(dim);
|
|
local_com = 0.0;
|
|
double local_mass = 0.0;
|
|
|
|
for (int i = 0; i < fem.mesh->GetNE(); ++i) {
|
|
if (fem.mesh->GetAttribute(i) == 3)
|
|
continue;
|
|
mfem::ElementTransformation *trans =
|
|
fem.mesh->GetElementTransformation(i);
|
|
const mfem::IntegrationRule &ir =
|
|
get_density_rule<field::Density::Form::CenterOfMass>(
|
|
fem, *trans, std::array<int, 1>{1}, utils::DOMAINS::STELLAR
|
|
);
|
|
|
|
for (int j = 0; j < ir.GetNPoints(); ++j) {
|
|
const mfem::IntegrationPoint &ip = ir.IntPoint(j);
|
|
trans->SetIntPoint(&ip);
|
|
|
|
double weight = trans->Weight() * ip.weight;
|
|
if (fem.has_mapping()) {
|
|
weight *= fem.mapping->ComputeDetJ(*trans, ip);
|
|
}
|
|
double rho_val = rho.GetValue(i, ip);
|
|
|
|
mfem::Vector phys_point(dim);
|
|
if (fem.has_mapping()) {
|
|
fem.mapping->GetPhysicalPoint(*trans, ip, phys_point);
|
|
} else {
|
|
trans->Transform(ip, phys_point);
|
|
}
|
|
|
|
const double mass_term = rho_val * weight;
|
|
local_mass += mass_term;
|
|
|
|
for (int d = 0; d < dim; ++d) {
|
|
local_com(d) += phys_point(d) * mass_term;
|
|
}
|
|
}
|
|
}
|
|
|
|
double global_mass = 0.0;
|
|
mfem::Vector global_com(dim);
|
|
MPI_Comm comm = fem.mesh->GetComm();
|
|
|
|
MPI_Allreduce(&local_mass, &global_mass, 1, MPI_DOUBLE, MPI_SUM, comm);
|
|
|
|
MPI_Allreduce(
|
|
local_com.GetData(), global_com.GetData(), dim, MPI_DOUBLE, MPI_SUM,
|
|
comm
|
|
);
|
|
|
|
if (global_mass > 1e-18) {
|
|
global_com /= global_mass;
|
|
} else {
|
|
global_com = 0.0;
|
|
}
|
|
|
|
return global_com;
|
|
}
|
|
|
|
void conserve_mass(
|
|
const fem::FEM &fem,
|
|
mfem::GridFunction &rho,
|
|
const double target_mass
|
|
) {
|
|
if (const double current_mass = domain_integrate_grid_function(
|
|
fem, rho, utils::DOMAINS::STELLAR
|
|
);
|
|
current_mass > 1e-15)
|
|
rho *= (target_mass / current_mass);
|
|
}
|
|
|
|
double get_moment_of_inertia(
|
|
const fem::FEM &fem,
|
|
const mfem::GridFunction &rho
|
|
) {
|
|
auto s2_func = [](const mfem::Vector &x) {
|
|
return std::pow(x(0), 2) + std::pow(x(1), 2);
|
|
};
|
|
|
|
std::unique_ptr<mfem::Coefficient> s2_coeff;
|
|
if (fem.has_mapping()) {
|
|
s2_coeff =
|
|
std::make_unique<mapping::PhysicalPositionFunctionCoefficient>(
|
|
*fem.mapping, s2_func
|
|
);
|
|
} else {
|
|
s2_coeff = std::make_unique<mfem::FunctionCoefficient>(s2_func);
|
|
}
|
|
|
|
mfem::GridFunctionCoefficient rho_coeff(&rho);
|
|
mfem::ProductCoefficient I_integrand(rho_coeff, *s2_coeff);
|
|
|
|
mfem::LinearForm I_lf(fem.densityFes.get());
|
|
const mfem::ElementTransformation &representative_transformation =
|
|
*fem.mesh->GetElementTransformation(0);
|
|
const mfem::IntegrationRule &integration_rule =
|
|
get_density_rule<field::Density::Form::Quadrupole>(
|
|
fem, representative_transformation, std::array<int, 1>{2},
|
|
utils::DOMAINS::STELLAR
|
|
);
|
|
mfem::Array<int> stellar_markers;
|
|
populate_element_mask(
|
|
fem.mesh.get(), utils::DOMAINS::STELLAR, stellar_markers
|
|
);
|
|
|
|
double local_I = 0.0;
|
|
if (fem.has_mapping()) {
|
|
mapping::MappedScalarCoefficient mapped_integrand(
|
|
*fem.mapping, I_integrand
|
|
);
|
|
auto *integrator = new mfem::DomainLFIntegrator(mapped_integrand);
|
|
integrator->SetIntRule(&integration_rule);
|
|
I_lf.AddDomainIntegrator(integrator, stellar_markers);
|
|
I_lf.Assemble();
|
|
local_I = I_lf.Sum();
|
|
} else {
|
|
auto *integrator = new mfem::DomainLFIntegrator(I_integrand);
|
|
integrator->SetIntRule(&integration_rule);
|
|
I_lf.AddDomainIntegrator(integrator, stellar_markers);
|
|
I_lf.Assemble();
|
|
local_I = I_lf.Sum();
|
|
}
|
|
|
|
double global_I = 0.0;
|
|
MPI_Allreduce(
|
|
&local_I, &global_I, 1, MPI_DOUBLE, MPI_SUM, fem.mesh->GetComm()
|
|
);
|
|
return global_I;
|
|
}
|
|
|
|
double get_mesh_volume(
|
|
const fem::FEM &fem,
|
|
const mapping::COORDINATE_SPACE coordinate_space,
|
|
const utils::DOMAINS domain
|
|
) {
|
|
mfem::ParMesh &mesh = *fem.mesh;
|
|
const bool physical =
|
|
(coordinate_space == mapping::COORDINATE_SPACE::PHYSICAL);
|
|
|
|
if (physical && !fem.has_mapping()) {
|
|
MFEM_ABORT(
|
|
"Physical volume requested but no domain mapping is available."
|
|
);
|
|
}
|
|
|
|
double local_volume = 0.0;
|
|
|
|
for (int e = 0; e < mesh.GetNE(); ++e) {
|
|
const int attr = mesh.GetAttribute(e);
|
|
switch (domain) {
|
|
case utils::DOMAINS::ALL:
|
|
break;
|
|
case utils::DOMAINS::STELLAR:
|
|
if (attr == 3)
|
|
continue;
|
|
break;
|
|
case utils::DOMAINS::VACUUM:
|
|
if (attr != 3)
|
|
continue;
|
|
break;
|
|
default:
|
|
MFEM_ABORT("Unsupported domain type for volume computation.");
|
|
}
|
|
mfem::ElementTransformation *T = mesh.GetElementTransformation(e);
|
|
const mfem::IntegrationRule &ir =
|
|
get_density_rule<field::Density::Form::MassConservation>(
|
|
fem, *T, {}, domain
|
|
);
|
|
|
|
for (int q = 0; q < ir.GetNPoints(); ++q) {
|
|
const mfem::IntegrationPoint &ip = ir.IntPoint(q);
|
|
T->SetIntPoint(&ip);
|
|
|
|
double dV = ip.weight * T->Weight();
|
|
|
|
if (physical) {
|
|
dV *= std::fabs(fem.mapping->ComputeDetJ(*T, ip));
|
|
}
|
|
|
|
local_volume += dV;
|
|
}
|
|
}
|
|
|
|
double global_volume = 0.0;
|
|
MPI_Allreduce(
|
|
&local_volume, &global_volume, 1, MPI_DOUBLE, MPI_SUM,
|
|
mesh.GetComm()
|
|
);
|
|
return global_volume;
|
|
}
|
|
} // namespace mean_field::analysis
|