Publication:
Separation in time-dependent flow

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Authors
Butterworth, William H., Jr.
Subjects
Separation
Oscillating Flow
Unsteady Flow
Cylinder
Advisors
Sarpkaya, Turgut
Date of Issue
1988-09
Date
Publisher
Language
en_US
Abstract
The angular motion of separation points on a smooth cylinder immersed in a sinusoidally oscillating flow has been determined experimentally through the use of a U-shaped water tunnel, a special differential pressure probe, and a data acquisition system. The results have been compared with those obtained previously by Grass and Kemp for a single amplitude of oscillation through the use of flow visualization. The results have shown that the separation points undergo large angular excursions during a given cycle, the degree of excursion depending on the Reynolds number and the Keulegan-Carpenter number. The separation data obtained in this exploratory investigation will form the basis of future numerical analysis of oscillating flow about cylinders.
Type
Thesis
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Format
35 p.
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Distribution Statement
Approved for public release; distribution is unlimited.
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