irrotational wave

irrotational wave

[¦ir·ə′tā·shən·əl ′wāv]
(physics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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However, it has been shown [1] that, if the mean flow is steady and uniform, and, therefore, both homentropic and irrotational, the system of equations governing small-amplitude homentropic irrotational wave motion in such a flow reduces to the equation
The wave numbers [[kappa].sub.s] and [[kappa].sub.p] are known as the slownesses of the rotational and irrotational waves, respectively.