feat(libmeanfield): centrifugal + pressure

libmeanfield/interface/operators/kernels/gravity_kernels.cppm

@@ -0,0 +1,42 @@
+module;
+#include <mfem.hpp>
+export module mean_field:operators.kernels.gravity_field;
+export import :mapping.domain_mapper;
+export import :fem;
+
+export namespace mean_field::operators::kernels {
+
+    void apply_mapped_hdiv_mass(
+        const fem::FEM &f,
+        const mapping::DomainMapperStateless &domain_mapper,
+        const mfem::Vector &gravity_gradient_true,
+        const mfem::Vector &displacement_true,
+        mfem::Vector &action
+    );
+
+    void apply_mapped_source(
+        const fem::FEM &f,
+        const mapping::DomainMapperStateless &domain_mapper,
+        const mfem::Vector &density_true,
+        const mfem::Vector &displacement_true,
+        mfem::Vector &action
+    );
+
+    void apply_mapped_hdiv_mass_variation(
+        const fem::FEM &f,
+        const mapping::DomainMapperStateless &domain_mapper,
+        const mfem::Vector &gravity_gradient_true,
+        const mfem::Vector &displacement_true,
+        const mfem::Vector &displacement_variation_true,
+        mfem::Vector &action
+    );
+
+    void apply_mapped_source_variation(
+        const fem::FEM &f,
+        const mapping::DomainMapperStateless &domain_mapper,
+        const mfem::Vector &density_true,
+        const mfem::Vector &displacement_true,
+        const mfem::Vector &displacement_variation_true,
+        mfem::Vector &action_variation
+    );
+} // namespace mean_field::operators::kernels