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RESEARCH PAPERS

Angular Range and Uncertainty Analysis of Nonorthogonal Crossed Hot Wire Probes

[+] Author and Article Information
Eduardo Blanco-Marigorta, Rafael Ballesteros-Tajadura, Carlos Santolaria

Universidad de Oviedo, Departamento de Energía, Campus de Viesques, 33271 Gijón, Spain

J. Fluids Eng 120(1), 90-94 (Mar 01, 1998) (5 pages) doi:10.1115/1.2819669 History: Received July 05, 1994; Revised October 09, 1997; Online December 04, 2007

Abstract

Crossed hot wire probes are widely used for measuring two-dimensional flows. Many applications in fluid mechanics like turbomachinery require an angular range as large as possible and a reasonable uncertainty in both direction and velocity values. The classic design places the wires orthogonally, while an angle between the probe wires allows a wider angular range to be obtained. The paper shows an experimental and a theoretical study of the response of this kind of probes, by analyzing the dependence of the calibration procedure and uncertainties of flow angle and velocity with the angle between the wires.

Copyright © 1998 by The American Society of Mechanical Engineers
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