Global stability for thermal convection in a couple-stress fluid saturating a porous medium with temperature and pressure dependent viscosity

• Autorzy: Sunil , Chodhary S. , Bharti P. K.
• Języki publikacji: EN

Abstrakty

EN

We show that the global nonlinear stability threshold for convection in a couple-stress fluid saturating a porous medium with temperature and pressure dependent viscosity is exactly the same as the linear instability boundary. This optimal result is important because it shows that the linearized instability theory has captured completely the physics of the onset of convection. Then the effect of couple stress parameter, variable dependent viscosity and Darcy-Brinkman number on the onset of convection are also analyzed.

Słowa kluczowe

EN

couple stress fluid; global stability; pressure and temperature dependent viscosity; porous media; medium permeability

PL

lepkość; porowatość; przepuszczalność

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2012
• Tom: Vol. 17, no. 2
• Strony: 583--602
• Opis fizyczny: Bibliogr. 45 poz., wykr.

Twórcy

autor

Sunil

autor

Chodhary S.

autor

Bharti P. K.

• Department of Mathematics, National Institute of Technology Hamirpur, (H.P.) - 177 005, INDIA,

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