Towards an entropy-based detached-eddy simulation
文献类型：期刊论文
| 作者 | Zhao R(赵瑞); Yan C(阎超); Li XL(李新亮) ; Kong WX
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| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2013-10 |
| 卷号 | 56期号:10页码:1970-1980 |
| 通讯作者邮箱 | zhaorui@ase.buaa.edu.cn |
| 关键词 | hybrid RANS/LES detached-eddy simulation turbulence compressible flows entropy |
| ISSN号 | 1674-7348 |
| 产权排序 | [Zhao Rui; Yan Chao; Kong WeiXuan] Beijing Univ Aeronaut & Astronaut, Natl Lab Computat Fluid Dynam, Beijing 100191, Peoples R China; [Li XinLiang] Chinese Acad Sci, Inst Mech, Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| 通讯作者 | Zhao, R (reprint author), Beijing Univ Aeronaut & Astronaut, Natl Lab Computat Fluid Dynam, Beijing 100191, Peoples R China. |
| 合作状况 | 国内 |
| 中文摘要 | A concept of entropy increment ratio (sI") is introduced for compressible turbulence simulation through a series of direct numerical simulations (DNS). sI" represents the dissipation rate per unit mechanical energy with the benefit of independence of freestream Mach numbers. Based on this feature, we construct the shielding function f (s) to describe the boundary layer region and propose an entropy-based detached-eddy simulation method (SDES). This approach follows the spirit of delayed detached-eddy simulation (DDES) proposed by Spalart et al. in 2005, but it exhibits much better behavior after their performances are compared in the following flows, namely, pure attached flow with thick boundary layer (a supersonic flat-plate flow with high Reynolds number), fully separated flow (the supersonic base flow), and separated-reattached flow (the supersonic cavity-ramp flow). The Reynolds-averaged Navier-Stokes (RANS) resolved region is reliably preserved and the modeled stress depletion (MSD) phenomenon which is inherent in DES and DDES is partly alleviated. Moreover, this new hybrid strategy is simple and general, making it applicable to other models related to the boundary layer predictions. |
| 学科主题 | 计算流体力学 |
| 分类号 | 二类/Q3 |
| 收录类别 | SCI ; EI |
| 资助信息 | National Basic Research Program of China [2009CB724104]; Innovation Foundation of BUAA for PhD Graduates; Academic New Artist Award of BUAA for PhD Graduates |
| 原文出处 | http://dx.doi.org/10.1007/s11433-012-4976-2 |
| 语种 | 英语 |
| WOS记录号 | WOS:000324643000022 |
| 公开日期 | 2013-10-23 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/47493]  |
| 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 | Zhao R,Yan C,Li XL,et al. Towards an entropy-based detached-eddy simulation[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2013,56(10):1970-1980. |
| APA | Zhao R,Yan C,Li XL,&Kong WX.(2013).Towards an entropy-based detached-eddy simulation.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,56(10),1970-1980. |
| MLA | Zhao R,et al."Towards an entropy-based detached-eddy simulation".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 56.10(2013):1970-1980. |
入库方式： OAI收割
来源：力学研究所
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