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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 29, 1996 - Issue 1
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Original Articles

NATURAL CONVECTION SUPPRESSION BY AZIMUTHAL PARTITIONS IN A HORIZONTAL POROUS ANNULUS

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Pages 65-81 | Received 14 Dec 1994, Accepted 06 Jul 1995, Published online: 02 Apr 2007
 

Abstract

Numerical studies by the Galerkin finite element method are presented for the suppression of natural convection heat transfer in a horizontal porous annulus heated from the inner surface. Azimuthal partitions are employed to reduce heat transfer, and the effects of the number of partitions and their positions are examined. For a single partition, its position has a negligible effect on heat transfer in the boundary layer regime. An increase in the number of partitions is effective in suppressing natural convection, and it is found that the Nusselt number Is inversely proportional to (N + 1), where N is the number of partitions.

Notes

Address correspondence to Dr. Tatsuo Nishimura, Department of Mechanical Engineering, Yamaguchi University, Tokiwadai, Ube, Yamamguchi 755, Japan.

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