Prediction of turbulent heat transfer in the entrance of an array of heated blocks using Low-Reynolds number κε model

Document Type

Conference Proceeding

Date of Original Version



A numerical study is conducted to investigate the entrance behavior of turbulent flow and heat transfer in an array of rectangular heated blocks. The blocks are deployed along one wall of a parallel-plate duct in an in-line arrangement in an attempt to simulate the cooling passages of electronic equipments. The Lam-Bremhorst low-Reynolds number form of the κ-ε turbulence model is used for the computations. The computations are performed for a set of geometric parameters characterizing the array and for the conditions of constant wall temperature and uniform heat generation per module. The Reynolds numbers ranged from 2000 to 5000, with the laminar Prandtl number being equal to 0.7 and the turbulent Prandtl number of 0.9. The results are presented in form of axial velocity contours, pressure distribution, local and average Nusselt number, and are compared with relevant experimental data.

Publication Title

American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD



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