Publication:
Aeolian tones from circular cylinders of non-uniform cross section

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Authors
Cohen, Steven Robert
Subjects
Aerolian Tones
Circular Cylinders
Lighthill's theory of aerodynamic sound
Lift Force
Correlation Lenqth
Non-Uniform Cylinders
Advisors
Sanders, J.V.
Date of Issue
1976-06
Date
June 1976
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
Lighthill's theory of aerodynamic sound is reviewed. Applications of this theory to different cylinder classes are synthesized and extended to cylinder types not addressed previously. An experiment wherein cylinders are placed in an open jet, permitting simultaneous measurement of total lift force, correlation parameters and radiated sound intensity, was conducted. Over the Reynolds number range 10 3 to 5 x10 4 , the theory of aerodynamic sound is validated for uniform, roughened, skewed, finned and notched cylinders and for cylinders with splitter plates. Reduction of lift force, by any means, is shown to reduce radiated sound intensity, and local lift force is found to vary monotonically with the two dimensionality of the vortex wake.
Type
Thesis
Description
Series/Report No
Department
Physics
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NPS Report Number
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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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