Publication:
Laminar boundary layer separation in oscillating flow.

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Authors
Despard, Ronald Arthur
Subjects
Separation
Boundary layer
Oscillating flow
Flow reversal
Laminar
Experimental
Advisors
Miller, James A.
Date of Issue
1969
Date
June 1969
Publisher
Naval Postgraduate School
Language
en_US
Abstract
Laminar boundary layer separation phenomena in oscillating flow was experimentally investigated. Multiple hotwire anemometers were used to obtain instantaneous boundary layer velocity profiles on a model in an oscillating freestream. Certain instantaneous profile behavior was found to be uniquely related to wake formation, while nonwake- inducing transient flow reversals were found to occur throughout the adverse pressure gradient regime. Based on these observations, a practical definition of boundary layer separation in oscillating flows was formulated. Separation data then obtained revealed that the imposition of oscillations caused the separation point to move upstream of its steady flow location. From the data acquired, a parametric correlation of separation point location was developed.
Type
Thesis
Description
Series/Report No
Department
Department of Aeronautics
Organization
Identifiers
NPS Report Number
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Funder
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Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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