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limiter(3rheolef) rheolef limiter(3rheolef)

NAME

limiter - discontinuous Galerkin slope limiter (rheolef-7.2)

SYNOPSIS

template <class T, class M>
field_basic<T,M>
limiter (

const field_basic<T,M>& uh,
const T& bar_g_S = 1.0,
const limiter_option& opt = limiter_option());

DESCRIPTION

This function returns a slope limited field for any supplied discontinuous approximation.


geo omega ('square');
space Xh (omega, 'P1d');
field uh (Xh);
...
field vh = limiter(uh);


It implements the minmod_TVB limiter for hyperbolic nonlinear problems approximated by discontinuous Galerkin methods. See the usersguide for details and examples.

OPTIONS

struct limiter_option {

bool active;
Float theta; // > 1, see Coc-1998, P. 209
Float M; // M=max|u''(t=0)(x)| at x where u'(t)(x)=0 :extremas
limiter_option() : active(true), theta(1.5), M(1) {} };

IMPLEMENTATION

This documentation has been generated from file main/lib/limiter.h

AUTHOR

Pierre Saramito <Pierre.Saramito@imag.fr>

COPYRIGHT

Copyright (C) 2000-2018 Pierre Saramito <Pierre.Saramito@imag.fr> GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

Mon Sep 19 2022 Version 7.2