Estimating von Kármán's constant from homogeneous turbulence

A celebrated universal aspect of wall-bounded turbulent flows is the von Kármán log-law-of-the-wall, describing how the mean velocity in the stream-wise direction depends on the distance from the wall. Although the log-law is known for more than 75 years, the von Kármán constant governing the slope...

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Bibliographic Details
Published in:Europhysics letters 2005-12, Vol.72 (6), p.943-949
Main Authors: Lo, T. S, L'vov, V. S, Pomyalov, A, Procaccia, I
Format: Article
Language:English
Subjects:
47.27.Jv
47.27.Nz
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Summary:A celebrated universal aspect of wall-bounded turbulent flows is the von Kármán log-law-of-the-wall, describing how the mean velocity in the stream-wise direction depends on the distance from the wall. Although the log-law is known for more than 75 years, the von Kármán constant governing the slope of the log-law was not determined theoretically. In this letter we show that the von Kármán constant can be estimated from homogeneous turbulent data, i.e. without information from wall-bounded flows.
ISSN:0295-5075
1286-4854
DOI:10.1209/epl/i2005-10323-8