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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1848
Title: Forced convection flow and heat transfer across an in-line bank of circular cylinders
Authors: Ram R.P.
Bharti, Ram Prakash
Dhiman, Amit KumarK.
Published in: Canadian Journal of Chemical Engineering
Abstract: The common engineering problem of flow across an in-line bank of circular cylinders was studied using CFD to investigate the nature of flow and heat transfer of a Newtonian incompressible fluid under a two-dimensional laminar forced convection regime. The problem was modelled as a unit cell with symmetric and periodic boundary conditions, and the forced convection flow-governing equations were solved numerically using a finite volume-based solver (ANSYS Fluent). The study examined the dependence of local and global characteristics (streamlines, pressure and isotherm contours, individual and total drag coefficients, and average Nusselt number) on the following parameters: free-volume fraction (0.7 ? ?f ? 0.99), Reynolds number (1 ? Re ? 40), and Prandtl number (0.7 ? Pr ? 100). The results reveal that, as the cylinder diameter becomes large relative to the pitch (i.e. as ?f decreases), friction drag across the cylinder surface increases, as well as pressure drag in the wake. Analogously, heat transfer improves and the Nusselt number increases as cylinder diameter-to-pitch ratio increases. The results were used to develop simple correlations for the drag coefficients and average Nusselt number. © 2016 Canadian Society for Chemical Engineering
Citation: Canadian Journal of Chemical Engineering (2016), 94(7): 1381-1395
URI: https://doi.org/10.1002/cjce.22483
http://repository.iitr.ac.in/handle/123456789/1848
Issue Date: 2016
Publisher: Wiley-Liss Inc.
Keywords: array of cylinders
drag coefficient
Nusselt number
periodic flow
porosity
ISSN: 84034
Author Scopus IDs: 57189383530
14521775900
8548369300
Author Affiliations: Ram, R.P., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Bharti, R.P., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Dhiman, A.K., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Corresponding Author: Bharti, R.P.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia; email: rpbharti@iitr.ac.in
Appears in Collections:Journal Publications [CH]

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