Improvement of Baldwin-Lomax turbulence model for supersonic complex flows

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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)
刊名	CHINESE JOURNAL OF AERONAUTICS
	2013-06
通讯作者邮箱	zhaorui@ase.buaa.edu.cn; yanchao@buaa.edu.cn; yujian@ase.buaa.edu.cn; lixl@lnm.imech.ac.cn
卷号	26 期号:3 页码:529–534
关键词	Baldwin-Lomax model Boundary layers Computational aerodynamics Entropy Supersonic flows Turbulence models
ISSN号	1000-9361
通讯作者	Yan, C (reprint author), Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China.
产权排序	[Zhao, Rui; Yan, Chao; Yu, Jian] Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China; [Li, Xinliang] Chinese Acad Sci, Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
合作状况	国内
中文摘要	Entropy 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.
学科主题	流体力学 ; 湍流
分类号	二类
收录类别	SCI ; EI ; CSCD
资助信息	National 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
原文出处	http://dx.doi.org/10.1016/j.cja.2013.04.047
语种	英语
WOS记录号	WOS:000321106800004
公开日期	2013-09-21
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/47442]
专题	力学研究所_高温气体动力学国家重点实验室
推荐引用方式 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.(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.