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.
Zielona Góra: Uniwersytet Zielonogórski
IJAME, volume 21, number 1 (2016)
Biblioteka Uniwersytetu Zielonogórskiego
2023-07-06
2023-04-06
65
https://zbc.uz.zgora.pl/publication/80426
Nazwa wydania | Data |
---|---|
Thermal convection of magneto compressible couple-stress fluid saturated in a porous medium with hall current | 2023-07-06 |
Mehta, C.B. Singh, M. Jurczak, Paweł - red.
Singh, Mahinder Mehta, C.B. Jurczak, Paweł - red.
Chavaraddi, Krishna B. Awati, V.B. Nandeppanavar, Mahantesh M. Gouder, Priya M. Jurczak, Paweł - red.
Singh, Mahinder Jurczak, Paweł - red.
Bhadauria, Beer Singh Singh, A. Singh, M.K. Jurczak, Paweł - red.
Vasu, B. Gorla, Rama Subba Reddy Murthy, P.V.S.N. Prasad, Ramachandra V. Bég, Anwar O. Siddiqa, Sadia Jurczak, Paweł - red.
Vasu, B. Gorla, Rama Subba Reddy Siddiqa, Sadia Murthy, P.V.S.N. Prasad, Ramachandra V. Bég, Anwar O. Jurczak, Paweł - red.
Seth, Gauri Shanker Sarkar, Subharthi Sharma, Ria Jurczak, Paweł - red.