Effect of vertical vibrations on the onset of binary convection

• Autorzy: Swamy M. S.

Identyfikatory

DOI

10.2478/ijame-2013-0054

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

gravity modulation; g-jitter; double diffusive convection; perturbation method

PL

grawitacja; metoda perturbacji; funkcja Rayleigha

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2013
• Tom: Vol. 18, no. 3
• Strony: 899--910
• Opis fizyczny: Bibliogr. 24 poz., wykr.

Twórcy

autor

Swamy M. S.

• Department of Mathematics, Government College Gulbarga 585 105, Karnataka, India

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