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Acoustic eigenmodes of corrugated ductsAcoustic propagation in two-dimensional corrugated ducts is analyzed. A transform is made to a coordinate system that matches the duct walls. The resulting wave equation separates in space and time. The spatial differential equation is then solved by expanding in the eigenfunctions of a flat-walled duct. The prescription for this expansion is given by the appropriate application of time-independent perturbation theory. Calculations of first-order corrections for a periodic duct of both finite and infinite length are presented.
Document ID
19750058636
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Succi, G. P.
(MIT Cambridge, Mass., United States)
Date Acquired
August 8, 2013
Publication Date
April 1, 1975
Subject Category
Acoustics
Meeting Information
Meeting: Acoustical Society of America, Meeting
Location: Austin, TX
Start Date: April 7, 1975
End Date: April 11, 1975
Sponsors: Acoustical Society of America
Accession Number
75A42708
Funding Number(s)
CONTRACT_GRANT: NGR-22-009-805
Distribution Limits
Public
Copyright
Other

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