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Low-frequency sound propagation in a quasi-one-dimensional flow

✍ Scribed by Mani, R.

Book ID
120110012
Publisher
Cambridge University Press
Year
1981
Tongue
English
Weight
236 KB
Volume
104
Category
Article
ISSN
0022-1120

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It is shown that the acoustic wave equation in a linear shear flow always has a critical layer, where the Doppler shifted frequency vanishes; since this is the only singularity of the wave equation apart from the point at infinity, the power series solution about the critical layer has infinite radi