Comment on the Clauser chart method for determining the friction velocity
نویسنده
چکیده
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.
منابع مشابه
MEASUREMENT OF WALL SHEAR STRESS IN TURBULENT BOUNDARY LAYERS USING AN OPTICAL INTERFEROMETRY METHOD N NISHIZAWA I MARUSIC and A E PERRY Department of Mechanical and Manufacturing Engineering
th Australasian Fluid Mechanics Conference Monash University Melbourne Australia December A new laser interferometry skin friction meter was built and was used to measure skin friction in a series of turbulent boundary layer ows This method has the advantage of providing a direct measure of skin friction through thin lm lubrication theory It does not rely on the existence of a law of the wall o...
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