| DNS of a spatially evolving hypersonic turbulent boundary layer at Mach 8 | |
Liang Xian ; Li XinLiang; Liang X(梁贤)
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| Source Publication | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
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| 2013-07-01 | |
| Volume | 56Issue:7Pages:1408-1418 |
| ISSN | 1674-7348 |
| Abstract | This paper reports the direct numerical simulation (DNS) for hypersonic turbulent boundary layer over a flat-plate at Ma∞=8 with the ratio of wall-to-freestream temperature equal to 1.9, which indicates an extremely cold wall condition. It is primarily used to assess the wall temperature effects on the mean velocity profile, Walz equation, turbulent intensity, strong Reynolds analogy (SRA), and compressibility. The present high Mach number with cold wall condition induces strong compressibility effects. As a result, the Morkovin’s hypothesis is not fully valid and so the classical SRA is also not fully consistent. However, some modified SRA is still valid at the far-wall region. It is also verified that the semi-local wall coordinate y* is better than conventional y+ in analysis of statistics features in turbulent boundary layer (TBL) in hypersonic flow.; This paper reports the direct numerical simulation (DNS) for hypersonic turbulent boundary layer over a flat-plate at Ma (a)=8 with the ratio of wall-to-freestream temperature equal to 1.9, which indicates an extremely cold wall condition. It is primarily used to assess the wall temperature effects on the mean velocity profile, Walz equation, turbulent intensity, strong Reynolds analogy (SRA), and compressibility. The present high Mach number with cold wall condition induces strong compressibility effects. As a result, the Morkovin's hypothesis is not fully valid and so the classical SRA is also not fully consistent. However, some modified SRA is still valid at the far-wall region. It is also verified that the semi-local wall coordinate y* is better than conventional y (+) in analysis of statistics features in turbulent boundary layer (TBL) in hypersonic flow. |
| Keyword | Dns Compressibility Effects Turbulent Boundary Layer |
| Subject Area | 计算流体力学 |
| DOI | 10.1007/s11433-013-5102-9 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000320502800025 |
| WOS Keyword | DIRECT NUMERICAL-SIMULATION ; TRANSITION |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| Funding Organization | National Nature Science Foundation of China(11072248) ; This work was supported by the National Nature Science Foundation of China (Grant No. 11072248), the National Basic Research Program (Grant No. 2009CB724100), the National High-tech R&D Program (No.2012AA01A304), and the CAS Information Project (INFO-115-B01). ; National Basic Research Program(2009CB724100) ; National High-tech RD Program(2012AA01A304) ; CAS Information Project(INFO-115-B01) |
| Department | LHD可压缩湍流 |
| Classification | 二类/Q3 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/47282 |
| Collection | 高温气体动力学国家重点实验室 |
| Corresponding Author | Liang X(梁贤) |
| Affiliation | Chinese Acad Sci, Inst Mech, Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Liang Xian,Li XinLiang,Liang X. DNS of a spatially evolving hypersonic turbulent boundary layer at Mach 8[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2013,56,7,:1408-1418. |
| APA | Liang Xian,Li XinLiang,&梁贤.(2013).DNS of a spatially evolving hypersonic turbulent boundary layer at Mach 8.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,56(7),1408-1418. |
| MLA | Liang Xian,et al."DNS of a spatially evolving hypersonic turbulent boundary layer at Mach 8".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 56.7(2013):1408-1418. |
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| IMCAS-J2013-150.pdf（1454KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-ND | View Download | |
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