DiFfRG::def::MinModLimiter Class Reference

MinMod slope limiter. More...

#include <minmod_limiter.hh>

Static Public Member Functions
template<typename NumberType >
static NumberType	slope_limit (const NumberType &du_1, const NumberType &du_2)

Static Private Member Functions
template<typename NumberType >
static NumberType	abs_with_zero_tie_derivative (const NumberType &value)
template<size_t order, typename NumberType >
static autodiff::Real< order, NumberType >	abs_with_zero_tie_derivative (const autodiff::Real< order, NumberType > &value)

Detailed Description

MinMod slope limiter.

Implements the classic minmod TVD limiter: slope_limit(a, b) = 0.5 * (sgn(a) + sgn(b)) * min(|a|, |b|)

When the two one-sided slopes have the same sign, the limiter returns the smaller one (in absolute value). When they have opposite signs (indicating a local extremum), it returns zero.

Satisfies the HasSlopeLimiter concept so it can be passed as the Limiter template parameter of the TVDReconstructor:

using Assembler = FV::KurganovTadmor::Assembler<Discretization, Model,
                      def::TVDReconstructor<Discretization::dim, def::MinModLimiter, double>>;

Member Function Documentation

abs_with_zero_tie_derivative() [1/2]

template<size_t order, typename NumberType >

static autodiff::Real< order, NumberType > DiFfRG::def::MinModLimiter::abs_with_zero_tie_derivative ( const autodiff::Real< order, NumberType > & value )

inlinestaticprivate

abs_with_zero_tie_derivative() [2/2]

template<typename NumberType >

static NumberType DiFfRG::def::MinModLimiter::abs_with_zero_tie_derivative ( const NumberType & value )

inlinestaticprivate

slope_limit()

template<typename NumberType >

static NumberType DiFfRG::def::MinModLimiter::slope_limit ( const NumberType & du_1, const NumberType & du_2 )

inlinestatic

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The documentation for this class was generated from the following file:

• /home/runner/work/DiFfRG_current/DiFfRG_current/DiFfRG/include/DiFfRG/discretization/FV/limiter/minmod_limiter.hh