Title

The Transmission of Sound in an Accoustically Treated Rectangular Duct with Boundary Layer

Abstract

The weighted residual method of Galerkin is applied to several rectangular ducts of various widths with a boundary layer on all four walls, two of which are lined with an acoustic material. The validity of employing the Galerkin method to problems of this type is demonstrated by performing computations to check the convergence of the method and by investigating limiting cases of the rectangular duct for which more exact results are known. In summary, the Galerkin method is a reliable method for treating the problem of sound propagation in acoustically treated ducts in which the sheared flow profile is a function of two spatial variables. © 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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