| limiter(4rheolef) | rheolef-7.0 | limiter(4rheolef) |
limiter - discontinuous Galerkin slope limiter
field limiter (const field& uh, options...);
This function returns a slope limited field for any supplied discontinuous approximation.
This function is still in development as a prototype: it supports only d=1 dimension and k=0 or 1 polynomial degrees. Its generalization to 2D and 3D geometries and any polynomial degree is in development.
geo omega ("square");
space Xh (omega, "P1d");
field uh (Xh);
...
field vh = limiter(uh);
struct limiter_option_type {
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_type() : active(true), theta(1.5), M(1) {}
};
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_type& opt = limiter_option_type());
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.
| rheolef-7.0 | rheolef-7.0 |