IMECH-IR  > 高温气体动力学国家重点实验室
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.
Source PublicationCHINESE SCIENCE BULLETIN
2014-11
Volume59Issue:31Pages:4137-4141
ISSN1001-6538
AbstractThe 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.
KeywordEntropy Turbulence Boundary-layer Turbulence Modeling Rans/les Hybrid Method
Subject AreaScience & Technology - Other Topics
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Indexed BySCI
Language英语
WOS IDWOS:000342421100024
Funding OrganizationThis 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.
DepartmentLHD可压缩湍流
Classification二类
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49326
Collection高温气体动力学国家重点实验室
Corresponding AuthorZhao, 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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