Creator:

Mehta, C.B. ; Singh, M. ; Kumar, S.

Contributor:

Jurczak, Paweł - red.

Title:

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

Group publication title:

IJAME, volume 21 (2016)

Subject and Keywords:

couple-stress fluid ; horizontal magnetic field ; compressibility ; porous medium ; Hall currents

Abstract:

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.

Publisher:

Zielona Góra: Uniwersytet Zielonogórski

Date:

2016

Resource Type:

artykuł

Format:

application/pdf

DOI:

10.1515/ijame-2016-0005

Pages:

83-93

Source:

IJAME, volume 21, number 1 (2016)

Language:

eng

License:

CC 4.0

License CC BY-NC-ND 4.0:

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Rights:

Biblioteka Uniwersytetu Zielonogórskiego