Volume No. :   3

Issue No. :  4

Year :  2012

ISSN Print :  0976-2973

ISSN Online :  2321-581X


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A Characterization of Thermosolutal Convection in Rivlin-Ericksen Fluid in the Presence of Magnetic Field in a Porous Medium



Address:   Ajaib S. Banyal*
Department of Mathematics, Govt. College Nadaun (Hamirpur), (HP) INDIA 177033
*Corresponding Author
DOI No:

ABSTRACT:
Thermosolutal instability of Veronis type in Rivlin-Ericksen viscoelastic fluid in the presence of uniform magnetic field in a porous medium is considered. Following the linearized stability theory and normal mode analysis, the paper mathematically established the condition for characterizing the oscillatory motions which may be neutral or unstable, for any arbitrary combination of free and rigid boundaries at the top and bottom of the fluid. It is established that all non-decaying slow motions starting from rest, magneto-thermosolutal instability of Veronis type in a Rivlin-Ericksen viscoelastic fluid of infinite horizontal extension and finite vertical depth in a porous medium, are necessarily non-oscillatory, in the regime where is the Thermosolutal Rayliegh number, Q is the Chandrasekhar number, is the magnetic Prandtl number, is the thermosolutal Prandtl number, is the medium permeability, is the porosity and F is the viscoelasticity parameter. The result is important since it hold for all wave numbers and for any arbitrary combination of free and rigid boundaries at the top and bottom of the fluid. A similar characterization theorem is also proved for Stern type of configuration.
KEYWORDS:
Thermosolutal convection; Rivlin-Ericksen Fluid; Magnetic Field; PES; Rayleigh number; Chandrasekhar number.
Cite:
Ajaib S. Banyal. A Characterization of Thermosolutal Convection in Rivlin-Ericksen Fluid in the Presence of Magnetic Field in a Porous Medium. Research J. Engineering and Tech. 3(4): Oct-Dec. 2012 page 270-280.
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