SIMPLE SOLUTIONS

LIMITER(4RHEOLEF) - Linux man page online | Special files

Discontinuous Galerkin slope limiter.

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rheolef-6.7
limiter(4rheolef) rheolef-6.7 limiter(4rheolef)

NAME

limiter - discontinuous Galerkin slope limiter

SYNOPSYS

field limiter (const field& uh, options...);

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); 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 polyno‐ mial degree is in development.

IMPLEMENTATION

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());
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