A perturbational weighted essentially non-oscillatory scheme

doi:10.1016/j.compfluid.2018.07.003

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	A perturbational weighted essentially non-oscillatory scheme
	Ceng FJ(曾方军); Shen YQ(申义庆); Liu SP(刘升平)
刊名	COMPUTERS & FLUIDS
	2018-08-30
卷号	172 页码:196-208
关键词	WENO scheme Numerical perturbation method Necessary and sufficient conditions Low-dissipation
ISSN号	0045-7930
DOI	10.1016/j.compfluid.2018.07.003
英文摘要	In this paper, based on the perturbed fluxes of all candidate fluxes used in the traditional fifth order WENO scheme, a fifth-order accurate perturbational weighted essentially non-oscillatory (P-WENO) scheme is developed. First, a corollary about the accuracy of a kind of conservative schemes is generalized and proved. Then, based on the corollary and the idea of numerical perturbation, the perturbed fluxes, which are one order higher than the traditional candidate ones of the fifth-order WEND scheme, are obtained. Furthermore, we derive the necessary and sufficient conditions for the fifth-order convergence of the new weighted scheme constructed by using the new perturbed fluxes and find that they are one order lower than those derived by Henrick et al. for the traditional fifth-order WENO scheme. Thus, the new weighted scheme, which uses the same weights of the WENO-Z scheme and the perturbed fluxes, can meet the necessary and sufficient condition for fifth-order convergence even at critical points. The resulted P-WENO scheme actually provides a novel method to decrease the numerical dissipation of traditional WENO schemes. Numerical examples are presented to verify the accuracy, robustness and low-dissipation of the new scheme. (C) 2018 Elsevier Ltd. All rights reserved.
分类号	二类
URL标识	查看原文
WOS关键词	SHOCK-CAPTURING SCHEMES ; DIRECT NUMERICAL-SIMULATION ; DIFFERENCE WENO SCHEMES ; EFFICIENT IMPLEMENTATION ; SMOOTHNESS INDICATOR ; TURBULENCE ; ACCURACY
WOS研究方向	Computer Science, Interdisciplinary Applications ; Mechanics
语种	英语
WOS记录号	WOS:000442067700014
资助机构	NSAF [U1530145] ; NKRDPC [2016YFA0401200] ; SCP [TZ2016002] ; NSFC [11272325, 11272324]
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/77850]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ceng FJ,Shen YQ,Liu SP. A perturbational weighted essentially non-oscillatory scheme[J]. COMPUTERS & FLUIDS,2018,172:196-208.
APA	曾方军,申义庆,&刘升平.(2018).A perturbational weighted essentially non-oscillatory scheme.COMPUTERS & FLUIDS,172,196-208.
MLA	曾方军,et al."A perturbational weighted essentially non-oscillatory scheme".COMPUTERS & FLUIDS 172(2018):196-208.