Abstract
Numerical solutions are presented for mixed convection in rotating concentric cylinders with a porous sleeve. The porous sleeve is press fitted to the inner surface of the outer cylinder. Whereas the inner cylinder is rotating at a constant speed, the outer cylinder remains stationary. The main objective of the present study was to investigate the flow pattern and temperature distribution as affected by the presence of the porous layer, the centrifugal force, and thermal buoyancy. A parametric study has been performed to investigate the effects of Peclet number, Rayleigh number, and Darcy number on the heat transfer results. Based on the results obtained, some implications for the industrial application of porous journal bearings can be made.
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