On the generalizations of the Doppler factor, local frequency, wave invariant and group velocity

DOI10.1016/0165-2125(88)90018-2zbMath0638.76096OpenAlexW2066973162MaRDI QIDQ1099738

L. M. B. C. Campos

Publication date: 1988

Published in: Wave Motion (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/0165-2125(88)90018-2

zbMATH Keywords

variational principleadiabatic invariantacoustics of nonuniform flowsBlokhintsev wave invariantDoppler factorenergy partition factorslocal Doppler-shifted frequencyray approximation

Mathematics Subject Classification ID

Hydro- and aero-acoustics (76Q05) Variational principles of physics (49S05)

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