WENO schemes using optimized third order fuzzy weight limiter functions

WENO schemes using optimized third order fuzzy weight limiter functions

This work presents an improved version of non-linear weight limiters to obtain third order non-oscillatory WENO scheme. The construction of this modified weight limiter is based on fuzzy inference system, which is a knowledge based rule system. The linear combination of overlapped basis functions is...

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Veröffentlicht in:Physica scripta 2024-05, Vol.99 (5), p.55238
Hauptverfasser: Mishra, Prabhat, Dubey, Ritesh Kumar
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Sprache:eng
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basis function
finite difference schemes
fuzzy logic
hyperbolic conservation law
third order WENO reconstruction
weight limiter function
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description This work presents an improved version of non-linear weight limiters to obtain third order non-oscillatory WENO scheme. The construction of this modified weight limiter is based on fuzzy inference system, which is a knowledge based rule system. The linear combination of overlapped basis functions is used to achieve the optimized weight limiters by exploring the linguistics hedges operator on the basis functions. The WENO scheme using optimized weight limiter achieves third order of accuracy and gives higher resolution to discontinuities compared to other established third order WENO schemes.
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subjects basis function
finite difference schemes
fuzzy logic
hyperbolic conservation law
third order WENO reconstruction
weight limiter function
title WENO schemes using optimized third order fuzzy weight limiter functions
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