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The wall region of a turbulent boundary layer

 

作者: W. R. C. Phillips,  

 

期刊: Physics of Fluids(00319171)  (AIP Available online 1987)
卷期: Volume 30, issue 8  

页码: 2354-2361

 

ISSN:0031-9171

 

年代: 1987

 

DOI:10.1063/1.866125

 

出版商: AIP

 

数据来源: AIP

 

摘要:

An analysis is undertaken of a nominally two‐dimensional turbulent boundary layer in zero pressure gradient. In accord with Yajnik [J. Fluid Mech.42, 411 (1970)], the well known law‐of‐the‐wall similarity relationship for the mean velocity, Reynolds stress, and turbulence fields in the wall region is shown to be only the leading term in an expansion, the higher‐order terms of which are dependent upon streamwise Reynolds number. The asymptotic behavior of the streamwise velocity, Reynolds stress, and turbulence intensities is deduced to leading order for two parts of the wall region, one immediately next to the wall and the other far enough from it for the effects of viscosity to be unimportant. A continuous function is then deduced for the velocity that precisely satisfies and links the asymptotics in each region; the corresponding distributions of Reynolds stress and turbulence intensities follow. Agreement with experiment at high Reynolds number is excellent. Noadhocturbulence assumptions are made.

 

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