| Problems of the conventional BL model as applied to super/hypersonic turbulent boundary layers and its improvements | |
Dong M; Li XL(李新亮) ; Dong, M (reprint author), Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China
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| Source Publication | Science China-Physics Mechanics & Astronomy
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| 2011 | |
| Volume | 54Issue:10Pages:1889-1898 |
| ISSN | 1674-7348 |
| Abstract | Turbulence modeling has played important roles in solving engineering problems. However, with the development of aerospace technology, turbulence modeling faces new challenges. How to further improve turbulence modeling for super/hypersonic flows is an urgent problem. Through analyzing a set of data resulting from DNS and experiments, it is found that some most popular models suffer from essential flaws, and can be hardly improved following the traditional mode of thinking. On the contrary, the BL model, which is one of the simplest and widely-used models, can be further improved. In this paper, through analyzing results from DNS data, the main cause of the inaccuracy in applying the BL model to supersonic and hypersonic turbulent boundary layers is found to have resulted from the mismatch between the location of the matching point of the inner and outer layers of the BL model determined by the conventional way and those given by DNS. Improvement on this point, as well as other improvements is proposed. Its effectiveness is verified through the comparison with DNS results. |
| Keyword | Turbulence Modeling Supersonic Hypersonic Turbulent Boundary Layer Dns Bl Model Direct Numerical-simulation Temperature Computation Flows |
| Subject Area | Physics |
| DOI | 10.1007/s11433-011-4450-6 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000295213100026 |
| WOS Keyword | DIRECT NUMERICAL-SIMULATION ; TEMPERATURE ; COMPUTATION ; FLOWS |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| Funding Organization | The cooperation of the two authors of this paper was brought about by Professor Zhou Heng of Tianjin University, and Professor Zhou has also made valuable contributions to the paper in the form of offering suggestions and comments to the first author, to which we are grateful. This work was supported by the National Basic Research Program of China (Grant No. 2009CB724103) and the National Aeronautics Base Science Foundation of China (Grant No. 2010ZA48002). |
| 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/311007/45168 |
| Collection | 高温气体动力学国家重点实验室 |
| Corresponding Author | Dong, M (reprint author), Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China |
| Recommended Citation GB/T 7714 | Dong M,Li XL,Dong, M . Problems of the conventional BL model as applied to super/hypersonic turbulent boundary layers and its improvements[J]. Science China-Physics Mechanics & Astronomy,2011,54,10,:1889-1898. |
| APA | Dong M,李新亮,&Dong, M .(2011).Problems of the conventional BL model as applied to super/hypersonic turbulent boundary layers and its improvements.Science China-Physics Mechanics & Astronomy,54(10),1889-1898. |
| MLA | Dong M,et al."Problems of the conventional BL model as applied to super/hypersonic turbulent boundary layers and its improvements".Science China-Physics Mechanics & Astronomy 54.10(2011):1889-1898. |
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