Author(s): Monika Khanna, Ajaib S. Banyal

Email(s): khannamonika1501@gmail.com , ajaibbanyal@rediffmail.com

DOI: Not Available

Address: Monika Khanna1* and Ajaib S. Banyal2
1Department of Mathematics, Govt. College Amb, Dist. Una, (HP) INDIA
2Department of Mathematics, Govt. College Nadaun, Dist. Hamirpur, (HP) INDIA 177033
*Corresponding Author

Published In:   Volume - 6,      Issue - 1,     Year - 2015


ABSTRACT:
The thermal instability of a couple-stress fluid acted upon by uniform vertical magnetic field and rotation heated from below is investigated. Following the linearized stability theory and normal mode analysis, the paper through mathematical analysis of the governing equations of couple-stress fluid convection with a uniform vertical magnetic field and rotation, for the case of rigid boundaries shows that the complex growth rate of oscillatory perturbations, neutral or unstable for all wave numbers, must lie inside a semi-circle, in the right half of a complex -plane, where Q is the Chandrasekhar number, is the Taylor number, and F is the couple-stress parameter, which prescribes the upper limits to the complex growth rate of arbitrary oscillatory motions of growing amplitude in a rotatory couple-stress fluid in porous medium heated from below, which provided significant improvement to the result of Khanna and Banyal.


Cite this article:
Monika Khanna, Ajaib S. Banyal. Upper Limit to the Growth Rate of Perturbation in Rotatory Convection in Couple-Stress Fluid in the Presence of Magnetic Field. Research J. Engineering and Tech. 6(1): Jan.-Mar. 2015 page 129-135.


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