Rheolef  7.2
an efficient C++ finite element environment
 
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<tt>limiter</tt>

discontinuous Galerkin slope limiter

Synopsis

template <class T, class M>
field_basic<T,M>
const field_basic<T,M>& uh,
const T& bar_g_S = 1.0,
const limiter_option& opt = limiter_option());
Expr1::float_type T
Definition field_expr.h:230
field_basic< T, M > limiter(const field_basic< T, M > &uh, const T &bar_g_S, const limiter_option &opt)
see the limiter page for the full documentation
Definition limiter.cc:65

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 User's guide 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) {}
};
see the Float page for the full documentation
Expr1::memory_type M

Implementation

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