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rAKA/src/model/diffusion_model/diffusion_law.hh
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diffusion_law.hh
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#include "constitutive_law.hh"
#ifndef AKANTU_DIFFUSION_LAW_HH
#define AKANTU_DIFFUSION_LAW_HH
namespace akantu {
class DiffusionModel;
class DiffusionLaw;
} // namespace akantu
namespace akantu {
using DiffusionFactory =
Factory<DiffusionLaw, ID, Int, const ID &, DiffusionModel &, const ID &>;
/* -------------------------------------------------------------------------- */
class DiffusionLaw : public ConstitutiveLaw<DiffusionModel> {
using Parent = ConstitutiveLaw<DiffusionModel>;
public:
DiffusionLaw(DiffusionModel & model, const ID & id = "diffusion_law",
const ID & fe_engine_id = "");
virtual void assembleInternalFlow(GhostType ghost_type);
virtual void assembleDiffusivityMatrix();
virtual void computeGradU(ElementType type, GhostType ghost_type);
virtual void computeDiffusivityGradU(GhostType ghost_type = _not_ghost);
virtual void computeDiffusivityGradUOnQuadPoints(ElementType /*type*/,
GhostType /*ghost_type*/) {
AKANTU_TO_IMPLEMENT();
}
virtual void computeDiffusivityOnQuadPoints(ElementType /*type*/,
GhostType /*ghost_type*/) {
AKANTU_TO_IMPLEMENT();
}
template <Int dim>
decltype(auto) getArguments(ElementType type, GhostType ghost_type) {
return zip("∇u"_n = make_view<dim>(grad_u(type, ghost_type)),
"D∇u"_n = make_view<dim>(d_grad_u(type, ghost_type)),
"diffusivity"_n =
make_view<dim, dim>(diffusivity(type, ghost_type)));
}
[[nodiscard]] virtual Real getStableTimeStep(Real /*element_size*/) {
return 0;
}
[[nodiscard]] virtual Real getRho() const { return 1; }
/* ------------------------------------------------------------------------ */
[[nodiscard]] Int getNbData(const Array<Element> & elements,
const SynchronizationTag & tag) const override;
void packData(CommunicationBuffer & buffer, const Array<Element> & elements,
const SynchronizationTag & tag) const override;
void unpackData(CommunicationBuffer & buffer, const Array<Element> & elements,
const SynchronizationTag & tag) override;
/* ------------------------------------------------------------------------ */
/// static method to retrieve the diffusion factory
static DiffusionFactory & getFactory();
protected:
InternalField<Real> & grad_u;
InternalField<Real> & d_grad_u;
InternalField<Real> & diffusivity;
};
namespace {
template <
template <Int> class Law, class Model_,
std::enable_if_t<std::is_base_of_v<DiffusionModel, Model_>> * = nullptr>
bool instantiateDiffusionLaw(const ID & id) {
return DiffusionFactory::getInstance().registerAllocator(
id,
[](Int dim, const ID & name, DiffusionModel & model, const ID & id) {
if (not aka::is_of_type<Model_>(model)) {
AKANTU_EXCEPTION("The diffusion law "
<< name << " works only with model of type "
<< debug::demangle(typeid(Model_).name()));
}
return tuple_dispatch<AllSpatialDimensions>(
[&](auto && _) -> std::unique_ptr<DiffusionLaw> {
constexpr auto && dim_ = aka::decay_v<decltype(_)>;
return std::make_unique<Law<dim_>>(model, id);
},
dim);
});
}
} // namespace
} // namespace akantu
#endif // AKANTU_DIFFUSION_LAW_HH
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