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Improvement of Baldwin-Lomax turbulence model for supersonic complex flows
Zhao R(赵瑞); Yan C(阎超); Yu J(于剑); Li XL(李新亮); Yan, C (reprint author), Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China.
Source PublicationCHINESE JOURNAL OF AERONAUTICS
2013-06
Volume26Issue:3Pages:529–534
ISSN1000-9361
AbstractEntropy represents the dissipation rate of energy. Through direct numerical simulation (DNS) of supersonic compression ramp flow, we find the value of entropy is monotonously decreasing along the wall-normal direction no matter in the attached or the separated region. Based on this feature, a new version of Baldwin-Lomax turbulence model (BL-entropy) is proposed in this paper. The supersonic compression ramp and cavity-ramp flows in which the original Baldwin-Lomax model fails to get convergent solutions are chosen to evaluate the performance of this model. Results from one-equation Spalart-Allmaras model (SA) and two-equation Wilcox κ-ω model are also included to compare with available experimental and DNS data. It is shown that BL-entropy could conquer the essential deficiency of the original version by providing a more physically meaningful length scale in the complex flows. Moreover, this method is simple, computationally efficient and general, making it applicable to other models related with the supersonic boundary layer.
KeywordBaldwin-lomax Model Boundary Layers Computational Aerodynamics Entropy Supersonic Flows Turbulence Models
Subject Area流体力学 ; 湍流
URL查看原文
Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000321106800004
Funding OrganizationNational Basic Research Program of China [2009CB724104]; Innovation Foundation of BUAA for Ph.D. Graduates [300521]; Academic New Artist Award of BUAA for Ph.D. Graduates
DepartmentLHD可压缩湍流
Classification二类
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47442
Collection高温气体动力学国家重点实验室
Corresponding AuthorYan, C (reprint author), Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China.
Recommended Citation
GB/T 7714
Zhao R,Yan C,Yu J,et al. Improvement of Baldwin-Lomax turbulence model for supersonic complex flows[J]. CHINESE JOURNAL OF AERONAUTICS,2013,26(3):529–534
APA Zhao R,Yan C,Yu J,Li XL,&Yan, C .(2013).Improvement of Baldwin-Lomax turbulence model for supersonic complex flows.CHINESE JOURNAL OF AERONAUTICS,26(3),529–534.
MLA Zhao R,et al."Improvement of Baldwin-Lomax turbulence model for supersonic complex flows".CHINESE JOURNAL OF AERONAUTICS 26.3(2013):529–534.
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