include/pops/numerics/time/schemes/imex.hpp Source File

adc_cpp 0.3.0 Model-free C++23 core for coupled hyperbolic-elliptic systems on adaptive (AMR) meshes, with MPI and GPU (Kokkos) backends

• include
• pops
• numerics
• time
• schemes

imex.hpp

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1#pragma once

2

3#include <pops/core/foundation/types.hpp>

4#include <pops/mesh/storage/multifab.hpp>

5

21

22namespace pops {

23

24template <class TransportStep, class ImplicitSourceSolve>

25void imex_euler_step(MultiFab& U, Real dt, TransportStep Texpl, ImplicitSourceSolve Simpl) {

26 Texpl(U, dt); // explicit: U becomes the known term U^n + dt T(U^n)

27 Simpl(U, dt); // implicit: solves U = known + dt S(U) (stiff source) in place

28}

29

30} // namespace pops

pops::MultiFab

Field distributed over a level: decomposition (BoxArray) + distribution (DistributionMapping) + ncomp...

Definition multifab.hpp:33

multifab.hpp

MultiFab: a field DISTRIBUTED over a level (equivalent of AMReX's MultiFab).

pops

Definition amr_hierarchy.hpp:29

pops::Real

double Real

Definition types.hpp:30

pops::imex_euler_step

void imex_euler_step(MultiFab &U, Real dt, TransportStep Texpl, ImplicitSourceSolve Simpl)

Definition imex.hpp:25

types.hpp

Base scalar types and the POPS_HD macro (host+device portability).

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