Title: Ray models for sound propagation and attenuation in ducts, in the absence of mean flow
Abstract: Ray models are constructed for describing the sound fields in lined, two dimensional ducts due, respectively, to a point source and a line source. Corrections for non-specular reflection and for multiple reflection are included. Fields calculated by using the models are compared with the corresponding exact fields. The results show that very reasonable accuracy can be obtained (especially when the appropriate corrections are included in the model) from such models when used to describe the sound field in a duct up to at least distances of the order of three duct widths from the source. Thus, it is concluded that for many applications in duct acoustics, ray models are sufficiently accurate and preferable in use to mode models because of the possible savings in computation time. Also they can provide a clearer, more direct picture of the physics of the interfering waves making up the sound field.
Publication Year: 1973
Publication Date: 1973-04-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 10
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