Thermosolutal instability of Walters' (model b') rotating fluid with vertical magnetic and varying gravity field in a porous medium

• Autorzy: Sharma V. , Sharma S.
• Języki publikacji: EN

Abstrakty

EN

The thermosolutal instability of Walters' (model B') elastico-viscous rotating fluid in a porous medium is considered in the presence of a uniform magnetic field and varying gravity field. For the case of stationary convection, the solute parameter delays the onset of convection. The system is stable or unstable as gravity increases or decreases in the presence of rotation and magnetic field stabilizes the system for TA1 < [(1+x0)+PQ1]2 [(1+x0)P2] as gravity increases or decreases. The porous medium permeability is also found to stabilize the system under certain conditions in the presence of rotation and magnetic field; whereas the kinematic viscoelasticity has no effect on the onset of convection. The magnetic field, rotation, porous medium permeability, kinematic viscoelasticity, the solute parameter and varying gravity field introduce oscillatory modes in the system, which were non-existent in their absence. The case of overstability is also considered wherein the sufficient conditions for the non-existence of overstability are obtained. The variation of the Rayleigh number with respect to the solute parameter, rotation, magnetic field and porous medium permeability for the stationary convection is also shown graphically.

Słowa kluczowe

EN

thermosolutal instability; Walters' (model B') rotating fluid; magnetic field; variable gravity field; porous medium

PL

hydromechanika

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2001
• Tom: Vol. 6, no 3
• Strony: 591--611
• Opis fizyczny: Bibliogr. 8 poz., wykr.

Twórcy

autor

Sharma V.

autor

Sharma S.

• Department of Mathematics, Himachal Pradesh University Shimla 171 005, INDIA