Rudraiah, N. ; Radhadevi, P. V. ; Kaloni, P. N. (1990) Convection in a viscoelastic fluid-saturated sparsely packed porous layer Canadian Journal of Physics / Revue Canadienne de Physique, 68 (12). pp. 1446-1453. ISSN 0008-4204
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Official URL: http://www.nrcresearchpress.com/doi/abs/10.1139/p9...
Related URL: http://dx.doi.org/10.1139/p90-207
Abstract
The linear stability of a viscoelastic fluid-saturated sparsely packed porous layer heated from below is studied analytically using the Darcy-Brinkman-Jeffreys model with different boundary combinations. The Galerkin technique is employed to determine the criterion for the onset of oscillatory convection. The effects of the viscoelastic parameters, the Prandtl number, and the porous parameter on the critical Rayleigh number, the wave number, and the frequency are analyzed. The results are compared with those obtained for both a Darcy-Jeffrey fluid and a Maxwell fluid. It is shown that under certain conditions for the viscoelastic parameters, the flow is overstable. The possibility of the occurrence of bifurcation is also discussed.
Item Type: | Article |
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Source: | Copyright of this article belongs to NRC Research Press. |
ID Code: | 47455 |
Deposited On: | 11 Jul 2011 14:01 |
Last Modified: | 11 Jul 2011 14:01 |
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