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Numerical simulation of laminar flow and heat transfer over banks of staggered cylinders

✍ Scribed by D. Ghosh Roychowdhury; Sarit Kumar Das; T. Sundararajan

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
271 KB
Volume
39
Category
Article
ISSN
0271-2091

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✦ Synopsis

Abstract

A study is conducted to investigate forced convective flow and heat transfer over a bank of staggered cylinders. Using a novel numerical formulation based on a non‐orthogonal collocated grid in a physical plane, the effects of Reynolds number and cylinder spacing on the flow and heat transfer behaviour are systematically studied. It is observed that both the Reynolds number and cylinder spacing influence the recirculatory vortex formation and growth in the region between the cylinders; in turn, the rates of heat transfer between the fluid and the staggered cylinders are affected. As the cylinder spacing decreases, the size and length of eddies reduce. For sufficiently small spacings, eddy formation is completely suppressed even at high Reynolds number. Pressure drop and Nusselt number predictions based on numerical study are in excellent agreement with available correlations. The study provides useful insight on the detailed flow and heat transfer phenomena for the case of a bank of staggered cylinders. Copyright Β© 2002 John Wiley & Sons, Ltd.

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