Suppressing numerical oscillation for nonlinear hyperbolic equations by wavelet analysis
type: Item
instance of: scholarly article
title: Suppressing numerical oscillation for nonlinear hyperbolic equations by wavelet analysis
zbMATH Open document ID: 1427.76228
DOI: 10.1155/2018/4859469
author: Yong Zhao
author: Peng-Yao Yu
author: Shao-Juan Su
author: Tian-Lin Wang
published in: Mathematical Problems in Engineering
publication date: 2019-02-08T00:00:00Z
review text: Summary: In the numerical solution for nonlinear hyperbolic equations, numerical oscillation often shows and hides the real solution with the progress of computation. Using wavelet analysis, a dual wavelet shrinkage procedure is proposed, which allows one to extract the real solution hidden in the numerical solution with oscillation. The dual wavelet shrinkage procedure is introduced after applying the local differential quadrature method, which is a straightforward technique to calculate the spatial derivatives. Results free from numerical oscillation can be obtained, which can not only capture the position of shock and rarefaction waves, but also keep the sharp gradient structure within the shock wave. Three model problems -- a one-dimensional dam-break flow governed by shallow water equations, and the propagation of a one-dimensional and a two-dimensional shock wave controlled by the Euler equations -- are used to confirm the validity of the proposed procedure.
Mathematics Subject Classification ID: 76M99
Mathematics Subject Classification ID: 65M99
Mathematics Subject Classification ID: 65T60
Mathematics Subject Classification ID: 76L05
zbMATH DE Number: 7019035
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2018/4859469
OpenAlex ID: W2889296662
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description: scientific article; zbMATH DE number 7019035