The mode matching method is used to analyze sound propagation in ducts modeled by a series of segments. Successful application of the method depends on adequately specifying and imposing the boundary conditions used to match the acoustic fields on the junctions between segments. While the boundary conditions may be derived by straightforward physical or mathematical arguments, the method by which they must be imposed in order to produce a well-posed numerical problem is not always clear. To illustrate this point, difficulties encountered when attempting to impose the matching conditions for a duct with a partial transverse baffle are discussed; several methods of approach are considered. Two of them were used to analyze a complicated ductcavity system. Samples of the numerical results obtained are given. (DePo)
Boundary conditions for mode-matching analysis of coupled acoustic fields in ducts
Grenzbedingungen fuer die Analyse gekoppelter Schallfelder in Kanaelen
AIAA-Papers ; 1-9
1978
9 Seiten, 9 Bilder, 25 Quellen
Aufsatz (Konferenz)
Englisch
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