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Adiabatic Assumption for Wave Propagation

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Date

1974

Authors

Fletcher, Neville H.

Journal Title

Journal ISSN

Volume Title

Publisher

American Association of Physics Teachers

Abstract

The common assumption that the speed of sound in a gas is determined by the adiabatic compressibility because the pressure variations are so rapid that no heat flow can take place is shown to be incorrect. The criterion for applicability of the adiabatic assumption in a free wave is rather that the frequency be lower than a certain very high limit. The propagation of sound in tubes is also discussed and it is shown that the frequency must, in addition, lie above a certain low limit if the adiabatic assumption is to be valid.

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Citation

URI

http://hdl.handle.net/1885/212550

Collections

ANU Research Publications

Source

American Journal of Physics

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1119/1.1987757

Restricted until

2037-12-31

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Fletcher1974a.pdf (181.31 KB)

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