Flush-Mounted Hot Film Anemometer Accuracy in Pulsatile Flow

[+] Author and Article Information
S. Nandy, J. M. Tarbell

Department of Chemical Engineering and the Bioengineering Program,, The Pennsylvania State University, University Park, Pa. 16802

J Biomech Eng 108(3), 228-231 (Aug 01, 1986) (4 pages) doi:10.1115/1.3138607 History: Received June 25, 1985; Revised March 21, 1986; Online June 12, 2009


The accuracy of a flush-mounted hot film anemometer probe for wall shear stress measurements in physiological pulsatile flows was evaluated in fully developed pulsatile flow in a rigid straight tube. Measured wall shear stress waveform based on steady flow anemometer probe calibrations were compared to theoretical wall shear stress waveforms based on well-established theory and measured flow rate waveforms. The measured and theoretical waveforms were in close agreement during systole (average deviation of 14 percent at peak systole). As expected, agreement was poor during diastole because of flow reversal and diminished frequency response at low shear rate.

Copyright © 1986 by ASME
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