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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1864
Title: Laminar mixed convection in a channel with a built-in semi-circular cylinder under the effect of cross-buoyancy
Authors: Sukesan M.K.
Dhiman, Amit KumarK.
Published in: International Communications in Heat and Mass Transfer
Abstract: Effects of cross-buoyancy mixed convection on flow and heat transfer characteristics of a long semi-circular cylinder (long in neutral direction) in a confined channel have been investigated in the laminar regime. The numerical results have been presented and discussed for the range of conditions as Reynolds number (Re). = 1-40, Richardson number (Ri). = 0-4, Prandtl number (Pr). = 0.71-50 and blockage ratio (?). = 16.67%-50%. The drag coefficient increases with increasing Richardson number and/or blockage ratio. The average Nusselt number is showing a maximum relative enhancement of approximately 45% for Ri. = 4 with respect to corresponding forced convection value (Ri. = 0). The average Nusselt number increases with increase in Prandtl number and shows a maximum relative enhancement of approximately 1136% for Pr. = 50 with respect to corresponding value at Pr. = 0.71. On the other hand, the maximum relative variation of the total drag coefficient is found to be approximately 55% for Ri. = 4 with respect to corresponding value at Ri. = 0. Finally, the simple heat transfer correlation is obtained for the proceeding range of control parameters. © 2014 Elsevier Ltd.
Citation: International Communications in Heat and Mass Transfer (2014), 58(): 25-32
URI: https://doi.org/10.1016/j.icheatmasstransfer.2014.08.025
http://repository.iitr.ac.in/handle/123456789/1864
Issue Date: 2014
Publisher: Elsevier Ltd
Keywords: Blockage ratio
Cross-buoyancy
Drag and lift coefficients
Heat transfer enhancement
Nusselt number
Prandtl number
Richardson number
Semi-circular cylinder
ISSN: 7351933
Author Scopus IDs: 56342606500
8548369300
Author Affiliations: Sukesan, M.K., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Dhiman, A.K., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Corresponding Author: Dhiman, A.K.; Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India; email: dhimuamit@rediffmail.com
Appears in Collections:Journal Publications [CH]

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