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On Double-Diffusive Convection in a Binary Viscoelastic Fluid Saturated Anisotropic Porous Layer


Affiliations
1 Department of Mathematics and Statistics, Himachal Pradesh University, Summer Hill, Shimla 171005, India
     

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In the present paper it is mathematically established that the linear growth rate of an arbitrary neutral or unstable oscillatory perturbation of growing amplitude in a double diffusive binary viscoelastic fluid saturated anisotropic porous layer heated from below must lie inside a semicircle in the right half of the (Pr, Pi)-plane whose centre is at the origin and radius equals λ1PrDRaT+√PrD12RaT2PrD+4Ras)/2, where RaT and Ras are the Darcy -Rayleigh number and the solute Rayleigh number respectively. Further, it is proved that this result is uniformly valid for quite general nature of the bounding surfaces.

Keywords

Double-Diffusive Convection, Viscoelastic Fluid, Porous Medium, Complex Growth Rate, Solute Rayleigh Number.
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  • On Double-Diffusive Convection in a Binary Viscoelastic Fluid Saturated Anisotropic Porous Layer

Abstract Views: 207  |  PDF Views: 3

Authors

Jyoti Prakash
Department of Mathematics and Statistics, Himachal Pradesh University, Summer Hill, Shimla 171005, India
Kultaran Kumari
Department of Mathematics and Statistics, Himachal Pradesh University, Summer Hill, Shimla 171005, India

Abstract


In the present paper it is mathematically established that the linear growth rate of an arbitrary neutral or unstable oscillatory perturbation of growing amplitude in a double diffusive binary viscoelastic fluid saturated anisotropic porous layer heated from below must lie inside a semicircle in the right half of the (Pr, Pi)-plane whose centre is at the origin and radius equals λ1PrDRaT+√PrD12RaT2PrD+4Ras)/2, where RaT and Ras are the Darcy -Rayleigh number and the solute Rayleigh number respectively. Further, it is proved that this result is uniformly valid for quite general nature of the bounding surfaces.

Keywords


Double-Diffusive Convection, Viscoelastic Fluid, Porous Medium, Complex Growth Rate, Solute Rayleigh Number.