Nonintrusive measurements of the boundary layer developing on a single and two circular cylinders

Nonintrusive measurements of the boundary layer developing on a single and two circular cylinders  The boundary layers developing on a single and two tandem circular cylinders were examined using multiple hot-film sensor arrays for Re=2.4–5.1×104. Hot-wire and surface pressure measurements, and smoke-wire flow visualization were also made to better understand the flow pattern and the evolution of the vortex street. The results show that, by use of the sensor arrays in conjunction with a bank of constant-temperature anemometers, (i) the effects of the upstream cylinder on the boundary layer developing on the downstream cylinder, (ii) the frequency of the vortex shedding, and (iii) the locations of flow separation and reattachment can be determined non-intrusively and simultaneously. These measurement capabilities will provide a practical means for the characterization and manipulation of unsteady flow phenomena. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Nonintrusive measurements of the boundary layer developing on a single and two circular cylinders

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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/s003480050101
Publisher site
See Article on Publisher Site

Abstract

 The boundary layers developing on a single and two tandem circular cylinders were examined using multiple hot-film sensor arrays for Re=2.4–5.1×104. Hot-wire and surface pressure measurements, and smoke-wire flow visualization were also made to better understand the flow pattern and the evolution of the vortex street. The results show that, by use of the sensor arrays in conjunction with a bank of constant-temperature anemometers, (i) the effects of the upstream cylinder on the boundary layer developing on the downstream cylinder, (ii) the frequency of the vortex shedding, and (iii) the locations of flow separation and reattachment can be determined non-intrusively and simultaneously. These measurement capabilities will provide a practical means for the characterization and manipulation of unsteady flow phenomena.

Journal

Experiments in FluidsSpringer Journals

Published: Jul 28, 1997

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