Numerical study on natural convection in a square enclosure containing a rectangular heated cylinder

2009, Volume 3, Issue 4

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Frontiers in Energy >> 2009, Volume 3, Issue 4 doi: 10.1007/s11708-009-0078-x

Numerical study on natural convection in a square enclosure containing a rectangular heated cylinder

1.State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China; 2.School of Mathematics and Statistics, Huazhong University of Science and Technology, Wuhan 430074, China;

Available online: 2009-12-05

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Abstract

In this paper, the natural convection in a square enclosure with a rectangular heated cylinder is investigated via the lattice Boltzmann method. A detailed study is conducted on the effect of the cylinder width and the Rayleigh number on the fluid flow and heat transfer. The flow structures and heat transfer patterns are classified into eight buoyant regimes, i.e., four steady regimes, two periodic regimes, one multiple periodic regime, and one chaos regime, two of which are reported for the first time.

Keywords

natural convection ; buoyant regime ; heated cylinder ; lattice Boltzmann

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