The Frequency Response of Electrochemical Wall Shear Probes in Pulsatile Flow

[+] Author and Article Information
L. Talbot, J. J. Steinert

Mechanical Engineering Department, University of California, Berkeley, CA 94720

J Biomech Eng 109(1), 60-64 (Feb 01, 1987) (5 pages) doi:10.1115/1.3138643 History: Received June 21, 1985; Revised October 07, 1986; Online June 12, 2009


The frequency response of surface-mounted electrochemical mass transfer probes used to deduce wall shear rates has been investigated experimentally for the case of fully developed laminar pulsatile flow in a straight tube. Generally good agreement is found with the asymptotic results obtained by Lighthill’s methods. The significance of the results with regard to the investigation of models of pulsatile flows of physiological interest is discussed. It is concluded that the frequency-dependent phase and amplitude corrections required to obtain accurate wall shear measurements are of such magnitudes as to render impractical the use of electrochemical probes to determine wall shear rates in these flows.

Copyright © 1987 by ASME
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