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All-speed Roe scheme for the large eddy simulation of homogeneous decaying turbulence
Li XS; Li XL(李新亮); Li, XS (reprint author), Tsinghua Univ, Dept Thermal Engn, Key Lab Thermal Sci & Power Engn, Minist Educ, Beijing 100084, Peoples R China.
Source PublicationINTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS
2016
Volume30Issue:1Pages:69-78
ISSN1061-8562
AbstractAs 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.
KeywordAll-speed Scheme Large Eddy Simulation Homogeneous Decaying Turbulence Roe Scheme Numerical Dissipation
DOI10.1080/10618562.2016.1156095
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000373597900006
WOS Keywordall-speed scheme ; large eddy simulation ; homogeneous decaying turbulence ; Roe scheme ; numerical dissipation
WOS Research AreaMechanics ; Physics
WOS SubjectMechanics ; Physics, Fluids & Plasmas
Funding OrganizationThis work is supported by the National Natural Science Foundation of China [project number 51276092].
DepartmentLHD可压缩湍流
ClassificationQ3
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Cited Times:37[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59535
Collection高温气体动力学国家重点实验室
Corresponding AuthorLi, XS (reprint author), Tsinghua Univ, Dept Thermal Engn, Key Lab Thermal Sci & Power Engn, Minist Educ, Beijing 100084, Peoples R China.
Recommended Citation
GB/T 7714
Li XS,Li XL,Li, XS . 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,&Li, XS .(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.
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