Effect of temperature-dependent viscosity on ferroconvection in a porous medium

• Autorzy: Ramanathan A. , Muchikel N.
• Języki publikacji: EN

Abstrakty

EN

The effect of temperature-dependent viscosity on the threshold of ferroconvective instability in a porous medium is studied using the Brinkman model. It is found that the stationary mode of instability is preferred to the oscillatory mode. The critical values of the magnetic Rayleigh number marking the onset of ferroconvection are obtained using the Galerkin technique. It is found that the effect of magnetization is to destabilize the system and so is the effect of temperature-dependent viscosity. The porous medium is found to have a stabilizing influence on the onset of convection. The problem is important in energy conversion devices involving ferromagnetic fluids as working media.

Słowa kluczowe

EN

ferroconvection; temperature-dependent viscosity; porous medium; Brinkman model; Galerkin technique

PL

mechanika płynów; termomechanika; reologia

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2006
• Tom: Vol. 11, no 1
• Strony: 93--104
• Opis fizyczny: Bibliogr. 23 poz., wykr.

Twórcy

autor

Ramanathan A.

autor

Muchikel N.

• Department of Mathematics Kanchi Mamunivar Centre for Post Graduate Studies Pondicherry- 605 008, INDIA,

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