Estimating von-Karman's constant from Homogeneous Turbulence

Details Estimating von-Karman's constant from Homogeneous Turbulence Estimating von-Karman's constant from Homogeneous Turbulence

2005-06-21

arxiv.org/abs/nlin/0506044v1

EuroPhys. Letts., v. 72, 943-949 (2005)

Nonlinear Sciences

Chaotic Dynamics

4 pages, 3 figs, PRL, submitted

Scientific paper

10.1209/epl/i2005-10323-8

A celebrated universal aspect of wall-bounded turbulent flows is the von Karman log-law-of-the-wall, describing how the mean velocity in the streamwise direction depends on the distance from the wall. Although the log-law is known for more than 75 years, the von Karman constant governing the slope of the log-law was not determined theoretically. In this Letter we show that the von-Karman constant can be estimated from homogeneous turbulent data, i.e. without information from wall-bounded flows.

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