Multiple solutions for buoyancy-induced flow in saturated porous media for large peclet numbers

Rafiqul M. Islam; K. Nandakumar

doi:10.1115/1.3247025

Multiple solutions for buoyancy-induced flow in saturated porous media for large peclet numbers

Rafiqul M. Islam, K. Nandakumar

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

The problem of buoyancy-induced secondary flow in fluid-saturated porous media is examined using a numerical model. The natural convection is coupled either with a forced axial flow or uniform internal heat generation. In both cases the model equations are shown to exhibit dual solutions over certain ranges of flow parameter. In the two-parameter space of aspect ratio and Grashof number, the flow transition between the two-vortex and four-vortex pattern can be explained in terms of a tilted cusp.

Original language	English
Pages (from-to)	866-871
Number of pages	6
Journal	Journal of Heat Transfer
Volume	108
Issue number	4
DOIs	https://doi.org/10.1115/1.3247025
State	Published - Nov 1986
Externally published	Yes

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abstract = "The problem of buoyancy-induced secondary flow in fluid-saturated porous media is examined using a numerical model. The natural convection is coupled either with a forced axial flow or uniform internal heat generation. In both cases the model equations are shown to exhibit dual solutions over certain ranges of flow parameter. In the two-parameter space of aspect ratio and Grashof number, the flow transition between the two-vortex and four-vortex pattern can be explained in terms of a tilted cusp.",

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AB - The problem of buoyancy-induced secondary flow in fluid-saturated porous media is examined using a numerical model. The natural convection is coupled either with a forced axial flow or uniform internal heat generation. In both cases the model equations are shown to exhibit dual solutions over certain ranges of flow parameter. In the two-parameter space of aspect ratio and Grashof number, the flow transition between the two-vortex and four-vortex pattern can be explained in terms of a tilted cusp.

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Multiple solutions for buoyancy-induced flow in saturated porous media for large peclet numbers

Abstract

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