| 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.
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| Source Publication | INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS
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| 2016 | |
| Volume | 30Issue:1Pages:69-78 |
| ISSN | 1061-8562 |
| Abstract | 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. |
| Keyword | All-speed Scheme Large Eddy Simulation Homogeneous Decaying Turbulence Roe Scheme Numerical Dissipation |
| DOI | 10.1080/10618562.2016.1156095 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000373597900006 |
| WOS Keyword | all-speed scheme ; large eddy simulation ; homogeneous decaying turbulence ; Roe scheme ; numerical dissipation |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Organization | This work is supported by the National Natural Science Foundation of China [project number 51276092]. |
| Department | LHD可压缩湍流 |
| Classification | Q3 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/59535 |
| Collection | 高温气体动力学国家重点实验室 |
| Corresponding Author | Li, 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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