Dynamic regrid: (re)builds a fine level from the tagging of a coarse level. More...

#include <pops/amr/hierarchy/amr_hierarchy.hpp>
#include <pops/amr/tagging/cluster.hpp>
#include <pops/amr/tagging/tag_box.hpp>
#include <pops/mesh/index/box2d.hpp>
#include <pops/mesh/layout/box_array.hpp>
#include <pops/mesh/layout/distribution_mapping.hpp>
#include <pops/mesh/storage/fab2d.hpp>
#include <pops/mesh/storage/multifab.hpp>
#include <pops/mesh/layout/refinement.hpp>
#include <pops/parallel/comm.hpp>
#include <utility>
#include <vector>

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Classes
struct	pops::RegridParams
	Regrid parameters (configuration object). More...

Namespaces
namespace	pops

Functions
template<class Crit >
TagBox	pops::tag_cells (const MultiFab &mf, const Box2D &domain, Crit crit)
	Marks the valid cells where the predicate is true, on a TagBox covering the domain.

TagBox	pops::grow_tags (const TagBox &in, int n, const Box2D &domain)
	Grows the tags by n cells (square neighborhood), staying within the domain.

template<class Crit >
void	pops::regrid_level (AmrHierarchy &h, int coarse_lev, Crit crit, const RegridParams &rp={})
	(Re)builds level coarse_lev+1 from the tagging of level coarse_lev.

Detailed Description

Dynamic regrid: (re)builds a fine level from the tagging of a coarse level.

Layer: include/pops/amr (AMR geometric primitives). Role: tags a level, clusters the tagged cells into boxes (Berger-Rigoutsos), refines into the BoxArray of the next level, rebuilds its MultiFab and fills it (interpolation from the coarse level, then a copy of the old fine level where it existed to preserve accuracy). Contract: the tagging criterion is a generic predicate on (ConstArray4, i, j); we stay agnostic of the physics. For a gradient criterion, the caller fills the ghosts beforehand.

Invariants:

conservative regrid = common hierarchy, co-located cells, regrid by union of tags;
the fine level lives in the refined index space of the coarse level (refine(ref_ratio));
without any tag, the fine level (and the finer ones) is removed.

include/pops/amr/regridding/regrid.hpp File Reference¶

Classes

Namespaces

Functions

Detailed Description