The reduction of spatial aliasing by long hot-wire anemometer probes

The reduction of spatial aliasing by long hot-wire anemometer probes  Experiment and numerical analysis are presented to demonstrate that a hot-wire anemometer probe reduces spatial aliasing of turbulent velocity fluctuations because of the filtering property of the probe sensing element. The experiment focuses on the one-dimensional turbulent velocity spectrum and utilizes a long sensing length hot-wire probe to exaggerate the effect of the sensing element on the turbulent field. The numerical analysis utilizes a model of the hot-wire probe from Wyngaard (1968) along with isotropic turbulence relations to obtain an equation for the hot-wire response in a turbulent velocity field. The model can be used to determine the effect of hot-wire length on the one and three-dimensional turbulent spectra. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

The reduction of spatial aliasing by long hot-wire anemometer probes

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Publisher
Springer-Verlag
Copyright
Copyright © 1997 by Springer-Verlag Berlin Heidelberg
Subject
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s003480050105
Publisher site
See Article on Publisher Site

Abstract

 Experiment and numerical analysis are presented to demonstrate that a hot-wire anemometer probe reduces spatial aliasing of turbulent velocity fluctuations because of the filtering property of the probe sensing element. The experiment focuses on the one-dimensional turbulent velocity spectrum and utilizes a long sensing length hot-wire probe to exaggerate the effect of the sensing element on the turbulent field. The numerical analysis utilizes a model of the hot-wire probe from Wyngaard (1968) along with isotropic turbulence relations to obtain an equation for the hot-wire response in a turbulent velocity field. The model can be used to determine the effect of hot-wire length on the one and three-dimensional turbulent spectra.

Journal

Experiments in FluidsSpringer Journals

Published: Jul 28, 1997

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