Direct Numerical Simulation on Mach Number and Wall Temperature Effects in the Turbulent Flows of Flat-Plate Boundary Layer
文献类型：期刊论文
| 作者 | Liang X ; Li XL(李新亮)
|
| 刊名 | COMMUNICATIONS IN COMPUTATIONAL PHYSICS
 |
| 出版日期 | 2015-01 |
| 卷号 | 17期号:1页码:189-212 |
| 通讯作者邮箱 | liangxian@imech.ac.cn ; lixl@imech.ac.cn |
| 关键词 | Hypersonic directly numerical simulation compressibility effects turbulent boundary layer strong Reynolds analogy |
| ISSN号 | 1815-2406 |
| 其他题名 | COMMUNICATIONS IN COMPUTATIONAL PHYSICS |
| 产权排序 | [Liang, Xian] Beifang Univ Nationalities, Sch Math & Informat Sci, Yinchuan 750021, Peoples R China; [Li, Xinliang] Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China |
| 通讯作者 | Li, XL (reprint author), Chinese Acad Sci, Inst Mech, LHD, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China. |
| 中文摘要 | In this paper, direct numerical simulation (DNS) is presented for spatially evolving turbulent boundary layer over an isothermal flat-plate at Ma(infinity) = 2.25,5,6,8. When Ma(infinity) = 8, two cases with the ratio of wall-to-reference temperature T-w/T-infinity = 1.9 and 10.03 are considered respectively. The wall temperature approaches recovery temperatures for other cases. The characteristics of compressible turbulent boundary layer (CTBL) affected by freestream Mach number and wall temperature are investigated. It focuses on assessing compressibility effects and the validity of Morkovin's hypothesis through computing and analyzing the mean velocity profile, turbulent intensity, the strong Reynolds analogy (SRA) and possibility density function of dilatation term. The results show that, when the wall temperature approaches recovery temperature, the effects of Mach number on compressibility is insignificant. As a result, the compressibility effect is very weak and the Morkovin's hypothesis is still valid for Mach number even up to 8. However, when Mach number equal to 8, the wall temperature effect on the compressibility is sensitive. In this case, when T-w/T-infinity = 1.9, the Morkovin's hypothesis is not fully valid. The validity of classical SRA depends on wall temperature directly. A new modified SRA is proposed to eliminate such negative factor in near wall region. Finally the effects of Mach number and wall temperature on streaks are also studied. |
| 分类号 | 二类/Q1 |
| 类目[WOS] | Physics, Mathematical |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | HIGH-ORDER ; WENO SCHEME ; CONVECTION ; RESOLUTION ; DNS |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.4208/cicp.221113.280714a |
| 语种 | 英语 |
| WOS记录号 | WOS:000353692300007 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/49988]  |
| 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 | Liang X,Li XL. Direct Numerical Simulation on Mach Number and Wall Temperature Effects in the Turbulent Flows of Flat-Plate Boundary Layer[J]. COMMUNICATIONS IN COMPUTATIONAL PHYSICS,2015,17(1):189-212. |
| APA | Liang X,&Li XL.(2015).Direct Numerical Simulation on Mach Number and Wall Temperature Effects in the Turbulent Flows of Flat-Plate Boundary Layer.COMMUNICATIONS IN COMPUTATIONAL PHYSICS,17(1),189-212. |
| MLA | Liang X,et al."Direct Numerical Simulation on Mach Number and Wall Temperature Effects in the Turbulent Flows of Flat-Plate Boundary Layer".COMMUNICATIONS IN COMPUTATIONAL PHYSICS 17.1(2015):189-212. |
入库方式： OAI收割
来源：力学研究所
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