Title

Representation of a 1 N Power Law Boundary Layer in the Sheared Flow Acoustic Transmission Problem

Abstract

A method is developed by which a 1 N power law boundary layer profile can be conveniently represented in studies of the transmission of sound in ducts with sheared flow. The method consists of an analytical solution near the duct walls which circumvents the singular behaviour in the conventional numerical solution arising because of the infinite velocity gradient introduced by the assumed boundary layer profile. Numerical results are compared with results obtained using the sinusoidal boundary layer profile. It is found that at a given boundary layer thickness the 1 N power law boundary layer behaves like a much thinner shear layer of sinusoidal type. © 1972.

Department(s)

Mechanical and Aerospace Engineering

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1972 Elsevier, All rights reserved.


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