Mixed convection in a horizontal rectangular duct heated from below

C. Abid, M. Medale, F. Papini and P. Cerisier

International Journal of Low-Carbon Technologies, 2006, vol. 1, issue 3, 236-244

Abstract: This paper deals with a mixed convection flow in a horizontal rectangular duct of transversal aspect ratio close to two, uniformly heated from below and thermally insulated elsewhere. The working fluid is water (Pr = 6) and the Reynolds number associated with the main flow is small (Re = 20). The heat flux supplied to the wall induces a secondary flow which manifests itself through natural convective rolls. This study has been conducted simultaneously via two ways: an experimental approach which enables us to investigate a large range of the two main control parameters (Reynolds and Rayleigh numbers) and a numerical analysis which permits us to obtain detailed local and global descriptions of the fluid flow and heat transfer throughout the whole computational domain. Copyright , Manchester University Press.

Date: 2006
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