Thermal convection of magneto compressible couple-stress fluid saturated in a porous medium with Hall current

• Autorzy: Mehta C. B. , Singh M. , Kumar S.

Identyfikatory

DOI

10.1515/ijame-2016-0005

• Języki publikacji: EN

Abstrakty

EN

An investigation is made on the effect of Hall currents on thermal instability of a compressible couple-stress fluid in the presence of a horizontal magnetic field saturated in a porous medium. The analysis is carried out within the framework of the linear stability theory and normal mode technique. A dispersion relation governing the effects of viscoelasticity, Hall currents, compressibility, magnetic field and porous medium is derived. For the stationary convection a couple-stress fluid behaves like an ordinary Newtonian fluid due to the vanishing of the viscoelastic parameter. Compressibility, the magnetic filed and couple-stress parameter have stabilizing effects on the system whereas Hall currents and medium permeability have a destabilizing effect on the system, but in the absence of Hall current couple-stress has a destabilizing effect on the system. It has been observed that oscillatory modes are introduced due to the presence of viscoelasticity, magnetic field porous medium and Hall currents which were non-existent in their absence.

Słowa kluczowe

EN

couple stress fluids; horizontal magnetic field; compressibility; porous medium; Hall currents

PL

pole magnetyczne; ściśliwość; porowatość; prądy Hall'a

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2016
• Tom: Vol. 21, no. 1
• Strony: 83--93
• Opis fizyczny: Bibliogr. 18 poz., wykr.

Twórcy

autor

Mehta C. B.

• Department of Mathematics Centre of Excellence Govt. Degree College Sanjauli Distt Shimla (H.P), INDIA

autor

Singh M.

• Department of Mathematics Govt. Post Graduate College Seema (Rohru) Distt Shimla (H.P), INDIA

autor

Kumar S.

• Department of Mathematics St. Bede’s College Shimla Distt Shimla (H.P), INDIA

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę