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Asian Journal of Scientific Research
Year: 2013  |  Volume: 6  |  Issue: 2  |  Page No.: 217 - 226

A Numerical Study Laminar Forced Convection of Air for In-line Bundle of Cylinders Crossflow

Tahseen A. Tahseen, M. Ishak and M.M. Rahman    

Abstract: In the present study, the numerical analysis is two-dimensional steady state Navier-stokes equations and the energy equation governing laminar incompressible flow are solved using the Finite Difference Method (FDM) and the technique Body Fitted Coordinates (BFC). The constant heat flux is imposed on the surface of the tubes as the thermal boundary condition. The arrangement is considered in-line tube-banks the transverse ratio ST/D and longitudinal pitch-to-diameter ratio SL/D of 1.25, 1.75 and 2.25, respectively are also considered. Reynolds numbers of 30, 125 and 200 and Prandtl number is taken as 0.71. The temperature contours, local Nusselt number distributions at the tube surface and mean Nusselt number were analyzed in this study. It was found of that the strength of the heat transfer between the surface of tubes and the air flow increases with increasing Reynolds number and increasing pitch-to-diameter the ratio.

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