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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1875
Title: Non-Newtonian power-law flow and heat transfer across a pair of side-by-side circular cylinders
Authors: Chaitanya N.S.K.
Dhiman, Amit KumarK.
Published in: International Journal of Heat and Mass Transfer
Abstract: Flow and heat transfer of non-Newtonian power-law fluids across a pair of identical circular cylinders in side-by-side arrangement are investigated numerically by solving the continuity, momentum and energy equations along with the appropriate boundary conditions. The numerical calculations are performed in an unconfined computational domain for the following range of physical parameters: Reynolds number, Re = 1-40 and power-law index, n = 0.4-1.8 (covering shear-thinning, n < 1; Newtonian, n = 1 and shear-thickening, n > 1 behaviors) for gap ratio, T/D = 1.5-4.0 at a constant Prandtl number of 50. The global characteristics such as drag coefficients and average Nusselt number, etc. are calculated and the representative streamline and isotherm contours are presented for the above range of conditions. It has been found that the individual and overall drag coefficients decrease and the average Nusselt number increases with Reynolds number for all T/D and n considered here. The heat transfer is found higher in shear-thinning fluids than Newtonian fluids and followed by shear-thickening fluids for 1.5 ? T/D ? 4.0 and 1 ? Re ? 40. © 2012 Elsevier Ltd. All rights reserved.
Citation: International Journal of Heat and Mass Transfer (2012), 55(21-22): 5941-5958
URI: https://doi.org/10.1016/j.ijheatmasstransfer.2012.06.005
http://repository.iitr.ac.in/handle/123456789/1875
Issue Date: 2012
Keywords: Drag and Nusselt number
Isotherms
Non-Newtonian fluids
Side-by-side circular cylinders
Streamlines
ISSN: 179310
Author Scopus IDs: 55270379800
8548369300
Author Affiliations: Chaitanya, N.S.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: amitdfch@iitr.ernet.in
Appears in Collections:Journal Publications [CH]

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