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Effect of channel confinement on wake dynamics and forced convective heat transfer past a blunt headed cylinder

Bhadauriya, Sonal and Kapadia, Harshit and Dalal, Amaresh and Sarkar, Sandip (2018) Effect of channel confinement on wake dynamics and forced convective heat transfer past a blunt headed cylinder. In: INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 124 . pp. 467-476.

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Official URL: http://dx.doi.org/10.1016/j.ijthermalsci.2017.10.0...

Abstract

In this paper, a two-dimensional numerical simulation is carried out to understand the effect of confinement (blockage ratio beta) on fluid flow and forced convective heat transfer characteristics past a blunt headed cylinder. Utilizing air as an operating fluid, flow simulations are carried out for wide ranges of blockage ratios (1/10 <= beta <= 1/3) and Reynolds numbers (60 <= Re <= 200). The flow characteristics and heat transport are analysed critically for different beta. The functional dependence of C-D (Drag Coefficient) and C-L (Lift Coefficient) on blockage ratio is examined. It has been found that C-L, reduces with increasing Re, while the Strouhal number and the average Nusselt number show an increasing trend when the blockage ratio is increased. The average Nusselt number also increases with increasing Re.

Item Type: Journal Article
Additional Information: Copy right for this article belong to the ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 23 RUE LINOIS, 75724 PARIS, FRANCE
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Depositing User: Id for Latest eprints
Date Deposited: 02 Mar 2018 15:04
Last Modified: 02 Mar 2018 15:04
URI: http://eprints.iisc.ac.in/id/eprint/58939

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