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UNSTEADY CONVECTIVE HEAT TRANSFER TO A LOW FREQUENCY OSCILLATING FLOW IN A CHANNEL

DOI: 10.1615/ICHMT.1996.TransientConvHeatTransf.470

Irfan Karagoz
University of Uludag, Department of Mechanical Engineering, 16059 Gorukle-Bursa, Turkey

Аннотация

Laminar fluid flow and convective heat transfer in a channel subjected to sinusoidally varying inlet velocity have been analysed numerically. Except a heated wall section placed in the middle of the bottom wall, all the channel walls were assumed adiabatic. The governing equations for the laminar, incompressible and two dimensional flow were solved iteratively by a control volume based finite difference method. The parameters involved are the Wormersley number varied between 3 and 24, averaged heat transfer coefficient, Reynolds and Nusselt numbers. Computed velocity and temperature profiles are compared with experimental values. The results show that the averaged heat transfer coefficient and the averaged Nusselt number increase with the increase of the Wormersley and the averaged Reynolds numbers.

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