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An internal wave in a viscous heat-conducting isothermal atmosphere

Published online by Cambridge University Press:  29 March 2006

T. N. Stevenson ,
J. N. Bearon  and
N. H. Thomas
T. N. Stevenson
Affiliation:
Department of the Mechanics of Fluids, University of Manchester, England
J. N. Bearon
Affiliation:
Department of the Mechanics of Fluids, University of Manchester, England
N. H. Thomas
Affiliation:
Department of the Mechanics of Fluids, University of Manchester, England
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Abstract

The effects of viscosity and heat conduction on the propagation of an internal wave generated by a simple harmonic localized disturbance are considered for the case of an isothermal compressible atmosphere. A similarity solution of the linearized equations shows that the velocities decay and the wave width increases away from the disturbance. Superpositions of this solution show how a few waves of small wavelength attenuate rapidly whereas waves of larger wavelength can increase in amplitude as they propagate upwards before eventually attenuating.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 65 , Issue 2 , 28 August 1974 , pp. 315 - 323
Copyright
© 1974 Cambridge University Press

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