| Entropy and its application in turbulence modeling | |
Zhao R(赵瑞); Rong JL; Li XL(李新亮) ; Zhao, R (reprint author), Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China.
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| Source Publication | CHINESE SCIENCE BULLETIN
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| 2014-11 | |
| Volume | 59Issue:31Pages:4137-4141 |
| ISSN | 1001-6538 |
| Abstract | The entropy concept was introduced into the turbulence modeling strategy in the present work. First, the turbulent boundary-layer was described from the point of energy dissipation. Based on the theoretical analysis and direct numerical simulations, the relationship between the entropy increment and viscosity dissipation was systematically investigated. Then, an entropy function f (s) was proposed to distinguish the turbulent boundary-layer from the external flow. This function is universal, independent of the inflow conditions or any specific turbulence model. With this function, a new version of delayed-detached-eddy simulation method SDES was constructed and verified with the supersonic boundary-layer flow and the cavity-ramped flow. Initial results showed that this method could successfully avoid the modeled stress depletion problem inherited from the original DES method. |
| Keyword | Entropy Turbulence Boundary-layer Turbulence Modeling Rans/les Hybrid Method |
| Subject Area | Science & Technology - Other Topics |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000342421100024 |
| Funding Organization | This work was supported by the National Basic Research Program of China (2009CB724104) and Civil Aerospace Technology Advanced Research Project. The authors are grateful for Dr. Wu Peng in Belgium for critical reading of this manuscript. |
| Department | LHD可压缩湍流 |
| Classification | 二类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/49325 |
| Collection | 高温气体动力学国家重点实验室 |
| Corresponding Author | Zhao, R (reprint author), Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China. |
| Recommended Citation GB/T 7714 | Zhao R,Rong JL,Li XL,et al. Entropy and its application in turbulence modeling[J]. CHINESE SCIENCE BULLETIN,2014,59(31):4137-4141. |
| APA | Zhao R,Rong JL,Li XL,&Zhao, R .(2014).Entropy and its application in turbulence modeling.CHINESE SCIENCE BULLETIN,59(31),4137-4141. |
| MLA | Zhao R,et al."Entropy and its application in turbulence modeling".CHINESE SCIENCE BULLETIN 59.31(2014):4137-4141. |
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