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Thermosolutal convection in the presence of both vertical and horizontal temperature gradients

Sahai, AK (1999) Thermosolutal convection in the presence of both vertical and horizontal temperature gradients. Journal of Applied Mechanics, Transactions ASME, 66 (1). pp. 181-196.

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Abstract

The occurrence of stationary and oscillatory solutions in a horizontal layer of fluid in the presence of horizontal and vertical temperature gradients and also in the presence of a vertical solute concentration gradient is investigated. The critical Rayleigh number for oscillatory and stationary solutions is derived numerically for a wide range of values of parameters and it is found that the marginal state is of periodic character in almost all the cases except for very small values of horizontal temperature gradient, solute gradient, and Prandtl number. The effect of horizontal gradient of temperature on the stability of the system is both stabilizing as well as destabilizing. For a large value of horizontal temperature gradient the system first exhibits oscillatory motion and in subsequent time oscillations die down.

Item Type: Article
Additional Information: Copyright of this article belongs to ASME.
Uncontrolled Keywords: Oscillations; Prandtl number; System stability; Thermal gradients; Thermodynamic stability, Horizontal temperature gradients; Rayleigh numbers; Thermosolutal convections, Heat convection
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 06 Mar 2015 05:49
Last Modified: 06 Mar 2015 05:49
URI: http://moeseprints.incois.gov.in/id/eprint/1643

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