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Relative scaling exponents and intermittency in compressible turbulent channel flows
Hu, KH; Chen, K
Corresponding AuthorHu, KH
2005-12-01
Source PublicationCHINESE PHYSICS LETTERS
ISSN0256-307X
Volume22Issue:12Pages:3115-3118
SubtypeArticle
AbstractThe relative scaling exponents and intermittency of three-dimensional compressible turbulent channel now are investigated by using direct numerical simulation. One case is subsonic flow (Ma = 0.8), the other is supersonic (Ma = 1.3), and the Reynolds numbers based on the mean bulk velocity and channel half-width are 2826 and 3010, respectively. The analysis of the local slopes of sixth order velocity structure function to third order reveals that there is a well-defined scaling range for 10 < y(+) < 100. It is also noted that the intermittency of longitudinal velocity increments in this region is stronger than that of the transverse ones. Comparison with the incompressible case shows that the location of the most intensive intermittency moves toward the log-law region, which is related to the displacement of streamwise vortical structures in the near-wall region.
KeywordPhysics Multidisciplinary
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedPhysics
Indexed BySCI
WOS KeywordREYNOLDS-NUMBER ; LAWS
Language英语
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000233799600037
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10500
Collection成都山地所知识仓储(2009年以前)
山地灾害与地表过程重点实验室
Affiliation1.Peking Univ, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China
2.Peking Univ, Dept Engn Sci & Mech, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Hu, KH,Chen, K. Relative scaling exponents and intermittency in compressible turbulent channel flows[J]. CHINESE PHYSICS LETTERS,2005,22(12):3115-3118.
APA Hu, KH,&Chen, K.(2005).Relative scaling exponents and intermittency in compressible turbulent channel flows.CHINESE PHYSICS LETTERS,22(12),3115-3118.
MLA Hu, KH,et al."Relative scaling exponents and intermittency in compressible turbulent channel flows".CHINESE PHYSICS LETTERS 22.12(2005):3115-3118.
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