The so-called Clauser-plot technique is used to determine the wall shear stress in a turbulent boundary layer from the mean velocity profile, in conditions where an accurate, direct determination of...

The so-called Clauser-plot technique is used to determine the wall shear stress in a turbulent boundary layer from the mean velocity profile, in conditions where an accurate, direct determination of the velocity gradient at the wall is not possible (which is the common situation for turbulent boundary layers). The table given below represents the measured velocity profile, such as determined e.g. by means of a traverse with a pitot tube or a hot-wire probe. As a function of the distance y from the wall (measured in mm), the velocity is given in non-dimensional form as u/Ue, where u is the local (mean) velocity in the boundary layer, and Ue the velocity in the external flow.
Nov 19, 2021
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