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Abstrakty
In the present work the linear stability analysis of double diffusive convection in a binary fluid layer is performed. The major intention of this study is to investigate the influence of time-periodic vertical vibrations on the onset threshold. A regular perturbation method is used to compute the critical Rayleigh number and wave number. A closed form expression for the shift in the critical Rayleigh number is calculated as a function of frequency of modulation, the solute Rayleigh number, Lewis number, and Prandtl number. These parameters are found to have a significant influence on the onset criterion; therefore the effective control of convection is achieved by proper tuning of these parameters. Vertical vibrations are found to enhance the stability of a binary fluid layer heated and salted from below. The results of this study are useful in the areas of crystal growth in micro-gravity conditions and also in material processing industries where vertical vibrations are involved.
Rocznik
Tom
Strony
899--910
Opis fizyczny
Bibliogr. 24 poz., wykr.
Twórcy
autor
- Department of Mathematics, Government College Gulbarga 585 105, Karnataka, India
Bibliografia
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- Zen’kovskaya S.M. and Rogovenko T.N. (1999): Filtration convection in a high-frequency vibration field. – J. Appl. Mech. Tech. Phys., vol.40, pp.379-385.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-79b44d7d-d099-4e5c-8fab-93214e79120e