All-speed Roe scheme for the large eddy simulation of homogeneous decaying turbulence

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	All-speed Roe scheme for the large eddy simulation of homogeneous decaying turbulence
	Li XS; Li XL(李新亮)
刊名	INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS
	2016
通讯作者邮箱	xs-li@mail.tsinghua.edu.cn
卷号	30 期号:1 页码:69-78
关键词	all-speed scheme large eddy simulation homogeneous decaying turbulence Roe scheme numerical dissipation
ISSN号	1061-8562
通讯作者	Li, XS (reprint author), Tsinghua Univ, Dept Thermal Engn, Key Lab Thermal Sci & Power Engn, Minist Educ, Beijing 100084, Peoples R China.
产权排序	[Li, Xue-song] Tsinghua Univ, Dept Thermal Engn, Key Lab Thermal Sci & Power Engn, Minist Educ, Beijing 100084, Peoples R China; [Li, Xin-liang] Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam LHD, Beijing 100080, Peoples R China
中文摘要	As a type of shock-capturing scheme, the traditional Roe scheme fails in large eddy simulation (LES) because it cannot reproduce important turbulent characteristics, such as the famous k(-5/3) spectral law, as a consequence of the large numerical dissipation. In this work, the Roe scheme is divided into five parts, namely, xi, delta U-p, delta p(p), delta U-u, and delta p(u), which denote basic upwind dissipation, pressure difference-driven modification of interface fluxes, pressure difference-driven modification of pressure, velocity difference-driven modification of interface fluxes, and velocity difference-driven modification of pressure, respectively. Then, the role of each part in the LES of homogeneous decaying turbulence with a low Mach number is investigated. Results show that the parts delta U-u, delta p(p), and delta U-p have little effect on LES. Such minimal effect is integral to computational stability, especially for delta U-p. The large numerical dissipation is due to xi and delta p(u), each of which features a larger dissipation than the sub-grid scale model. On the basis of these conditions, an improved all-speed Roe scheme for LES is proposed. This scheme can provide satisfactory LES results even for coarse grid resolutions with usually adopted second-order reconstructions for the finite volume method.
分类号	Q3
类目[WOS]	Mechanics ; Physics, Fluids & Plasmas
研究领域[WOS]	Mechanics ; Physics
关键词[WOS]	all-speed scheme ; large eddy simulation ; homogeneous decaying turbulence ; Roe scheme ; numerical dissipation
收录类别	SCI
原文出处	http://dx.doi.org/10.1080/10618562.2016.1156095
语种	英语
WOS记录号	WOS:000373597900006
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/59535]
专题	力学研究所_高温气体动力学国家重点实验室
推荐引用方式 GB/T 7714	Li XS,Li XL. All-speed Roe scheme for the large eddy simulation of homogeneous decaying turbulence[J]. INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS,2016,30(1):69-78.
APA	Li XS,&李新亮.(2016).All-speed Roe scheme for the large eddy simulation of homogeneous decaying turbulence.INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS,30(1),69-78.
MLA	Li XS,et al."All-speed Roe scheme for the large eddy simulation of homogeneous decaying turbulence".INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS 30.1(2016):69-78.