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
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
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
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.