Comment on the Clauser chart method for determining the friction velocity |
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| Authors: | Tie Wei Rodney Schmidt Patrick McMurtry |
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| Affiliation: | (1) Department of Mechanical Engineering, University of Utah, Salt Lake City, UT 84112, USA;(2) Computational Sciences Department 9233, Sandia National Laboratories, Albuquerque, NM 87185, USA |
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| Abstract: | A known difficulty with using the Clauser chart method to determine the friction velocity in wall bounded flows is that it assumes, a priori, a logarithmic law for the mean velocity profile. Using both experimental and DNS data in the literature, this note explicitly shows how friction velocities obtained using the Clauser chart method can potentially mask subtle Reynolds-number-dependent behavior.
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