Interface reconstruction policies: MUSCL limiters and WENO5-Z. More...

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

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Classes
struct	pops::NoSlope
	First-order reconstruction (piecewise constant): zero slope, 1 ghost. More...

struct	pops::Minmod
	minmod limiter: TVD (Total Variation Diminishing), 2 ghosts, order 2 in smooth regions. More...

struct	pops::VanLeer
	van Leer limiter: smooth, 2 ghosts, better order at extrema than Minmod. More...

struct	pops::Weno5
	WENO5 tag policy: marks the stencil at 3 ghosts, delegates to weno5z. More...

Namespaces
namespace	pops

Functions
POPS_HD Real	pops::weno5z (Real vm2, Real vm1, Real v0, Real vp1, Real vp2)
	weno5z: WENO5-Z reconstruction (Borges 2008) at one interface, on a 5-point stencil.

Detailed Description

Interface reconstruction policies: MUSCL limiters and WENO5-Z.

Each policy exposes:

n_ghost: required stencil radius (1 = first order, 2 = linear MUSCL, 3 = WENO5).
operator()(am, ap): slope limited from the backward (am) and forward (ap) differences.

All policies are POPS_HD (no std::, no branch to UB). The limiter is a template parameter in assemble_rhs / reconstruct (static polymorphism, inlined on device). INVARIANT: a reconstruction policy is POINTWISE – it does not loop over the grid and does not access any global array. The mesh stencil access lives in reconstruct (spatial_operator.hpp).

include/pops/numerics/fv/reconstruction.hpp File Reference¶

Classes

Namespaces

Functions

Detailed Description