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Erschienen in: Journal of Engineering Mathematics 1/2014

01.06.2014

Onset conditions for a Rayleigh–Taylor instability with step function density profiles

verfasst von: Jayna Gandhi, Philip M. J. Trevelyan

Erschienen in: Journal of Engineering Mathematics | Ausgabe 1/2014

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Abstract

The stability of several density profiles constructed from a linear combination of step functions in a vertically orientated two-dimensional porous medium are considered. A quasi-steady-state approximation is made so that the initial stability of the system can be approximated. Using a similar approach to that of Tan and Homsy (Phys Fluids 29:3549–3556, 1986) a dispersion equation for each density profile is obtained analytically at time zero. Neutral stability curves are then obtained to allow the regions of the parameter space to be divided into stable and unstable regions.

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Metadaten
Titel
Onset conditions for a Rayleigh–Taylor instability with step function density profiles
verfasst von
Jayna Gandhi
Philip M. J. Trevelyan
Publikationsdatum
01.06.2014
Verlag
Springer Netherlands
Erschienen in
Journal of Engineering Mathematics / Ausgabe 1/2014
Print ISSN: 0022-0833
Elektronische ISSN: 1573-2703
DOI
https://doi.org/10.1007/s10665-013-9649-2

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