fluxlimiter
A flux limiter (often written flux-limiter) is a numerical device used in finite-volume and finite-difference schemes for hyperbolic partial differential equations to combine high-order accuracy in smooth regions with stable, non-oscillatory behavior near discontinuities. Flux limiters are nonlinear functions that adjust a high-order flux or slope correction using information about local gradients, effectively reducing spurious oscillations (Gibbs phenomena) while preserving sharp features such as shocks and contact discontinuities.
In practice, a limiter multiplies a high-order correction by a factor phi(r) that depends on a ratio
Flux limiters are closely associated with the concept of total variation diminishing (TVD) schemes, which aim