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A finite element, wave envelope formulation for acoustical radiation in moving flows

✍ Scribed by R.J. Astley

Book ID
104154271
Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
762 KB
Volume
103
Category
Article
ISSN
0022-460X

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✦ Synopsis

An axisymmetric finite element model is presented for the prediction of radiation patterns generated by stationary acoustical sources in moving flows. The acoustical field is represented in an outer region by wave envelope elements which incorporate some features of ray acoustical behaviour. These are compatibly matched to a conventional finite element mesh in a region close to the generating mechanism. Results are presented for problems involving vibrating cylinders and spheres in subsonic mean flows. Good agreement is established between computed and exact solutions.

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