Volume 72, Number 6, December 2005
|Page(s)||943 - 949|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||09 November 2005|
Estimating von Kármán's constant from homogeneous turbulence
Department of Chemical Physics, The Weizmann Institute of Science Rehovot 76100, Israel
Accepted: 13 October 2005
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.
PACS: 47.27.Nz – Boundary layer and shear turbulence / 47.27.Jv – High-Reynolds-number turbulence
© EDP Sciences, 2005
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