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feat(surface): surface deformation prescriptions

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restricted the unknown state vector to surface deformation and implemented one prescription, NodalRadialSurface, while the full volumetric displacment field is reconstructed analytically from that. This reduced the number of degrees of freedom in the system by a factor of 80 while also removing many null vectors from the system.
This commit is contained in:
Emily Boudreaux
2026-09-01 11:50:13 -04:00
parent 0a7f18c5c7
commit 85500fef3b
40 changed files with 8924 additions and 1164 deletions
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71
libmeanfield/interface/utils/blocks.cppm
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@@ -59,6 +59,19 @@ export namespace mean_field::utils::blocks {
static inline constexpr geometry geometry_term{};
};
struct surface_deformation final : field {
struct parameters final : term {
struct value final : value_block_base { };
};
struct shape_equilibrium final : term {
struct residual final : residual_block_base { };
};
static inline constexpr parameters parameters_term{};
static inline constexpr shape_equilibrium shape_equilibrium_term{};
};
struct gravity final : field {
struct gradient final : term {
struct value final : value_block_base { };
@@ -99,6 +112,7 @@ export namespace mean_field::utils::blocks {
inline constexpr density density_field{};
inline constexpr displacement displacement_field{};
inline constexpr surface_deformation surface_deformation_field{};
inline constexpr gravity gravity_field{};
inline constexpr enthalpy enthalpy_field{};
inline constexpr barotropic_constant barotropic_constant_field{};
@@ -422,6 +436,59 @@ export namespace mean_field::utils::blocks {
density::mass::value,
displacement::geometry::value>>;
// Root stellar-equilibrium coordinates:
// [rho, q, g, Phi, h, C], where q parameterizes the stellar surface.
// Full-volume displacement remains an internal coordinate of the child
// operators above and is generated from q by the domain-deformation map.
using surface_deformed_stellar_equilibrium_form = block_form<
type_list<
density::mass::value,
surface_deformation::parameters::value,
gravity::gradient::value,
gravity::poisson::value,
enthalpy::specific::value,
barotropic_constant::mass_normalization::value>,
type_list<
gravity::gradient::residual,
gravity::poisson::residual,
density::mass::residual,
surface_deformation::shape_equilibrium::residual,
enthalpy::specific::residual,
barotropic_constant::mass_normalization::residual>>;
using surface_deformed_stellar_equilibrium_jacobian_form = type_list<
block_row<
gravity::gradient::residual,
gravity::gradient::value,
gravity::poisson::value,
surface_deformation::parameters::value>,
block_row<
gravity::poisson::residual,
gravity::gradient::value,
density::mass::value,
surface_deformation::parameters::value>,
block_row<
density::mass::residual,
density::mass::value,
enthalpy::specific::value,
surface_deformation::parameters::value>,
block_row<
surface_deformation::shape_equilibrium::residual,
density::mass::value,
surface_deformation::parameters::value,
gravity::gradient::value,
enthalpy::specific::value>,
block_row<
enthalpy::specific::residual,
enthalpy::specific::value,
gravity::poisson::value,
surface_deformation::parameters::value,
barotropic_constant::mass_normalization::value>,
block_row<
barotropic_constant::mass_normalization::residual,
density::mass::value,
surface_deformation::parameters::value>>;
// Columns: [d, h]
// Rows: [R_d]
using pressure_force_form = block_form<
@@ -438,4 +505,8 @@ export namespace mean_field::utils::blocks {
static_assert(valid_jacobian_form<
barotropic_equilibrium_form,
barotropic_equilibrium_jacobian_form>);
static_assert(valid_jacobian_form<
surface_deformed_stellar_equilibrium_form,
surface_deformed_stellar_equilibrium_jacobian_form>);
} // namespace mean_field::utils::blocks