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TECHNICAL BRIEFS

A Multi-Sensor Hot-Wire Probe to Measure Vorticity and Velocity in Turbulent Flows

[+] Author and Article Information
P. Vukoslavc̆ević, J.-L. Balint, J. M. Wallace

Department of Mechanical Engineering, The University of Maryland, College Park, MD 20742

J. Fluids Eng 111(2), 220-224 (Jun 01, 1989) (5 pages) doi:10.1115/1.3243627 History: Received July 06, 1987; Online October 26, 2009

Abstract

The design and construction of a miniature hot-wire probe capable of simultaneously measuring all components of the velocity and vorticity vectors in turbulent flows are presented. A brief description of the probe resolution and calibration as well as the procedure to solve the cooling equations are given. Preliminary testing in the irrotational region of the flow shows that the spurious vorticity obtained from the probe due to system measurement error does not exceed 8 percent of the RMS vorticity fluctuation levels measured over the region y+ = 15 − 45 in a turbulent boundary layer.

Copyright © 1989 by ASME
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