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Instability of two superposed self gravitating viscous streams

Sahai, AK (1997) Instability of two superposed self gravitating viscous streams. Arabian Journal for Science and Engineering, 22 (2A). pp. 213-221.

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The instability of two superposed, semi-infinite, viscous, homogeneous and self-gravitating streams, separated by a horizontal interface z = 0, is investigated. A dispersion relation is obtained in the most general case and a mathematically simple case of highly viscous fluids is dealt with. It is found that the instability sets in for wavenumbers lying outside the region bounded between a circle and an ellipse in the first quadrant in the k x, k y plane for streams having the same fluid properties and moving in opposite directions with equal velocities. The effect of kinematic viscosity on the growth rate of unstable configuration is found to have a dual effect.

Item Type: Article
Additional Information: Copyright of this article belongs to Arabian Journal for Science and Engineering
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 21 Feb 2015 15:12
Last Modified: 21 Feb 2015 15:12

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