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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2437
Title: Forced convection heat transfer from an elliptical cylinder to power-law fluids
Authors: Bharti R.P.
Sivakumar P.
Chhabra R.P.
Published in: International Journal of Heat and Mass Transfer
Abstract: Forced convection heat transfer to incompressible power-law fluids from a heated elliptical cylinder in the steady, laminar cross-flow regime has been studied numerically. In particular, the effects of the power-law index (0.2 ? n ? 1.8), Reynolds number (0.01 ? Re ? 40), Prandtl number (1 ? Pr ? 100) and the aspect ratio of the elliptic cylinder (0.2 ? E ? 5) on the average Nusselt number (Nu) have been studied. The average Nusselt number for an elliptic cylinder shows a dependence on the Reynolds and Prandtl numbers and power-law index, which is qualitatively similar to that for a circular cylinder. Thus, heat transfer is facilitated by the shear-thinning tendency of the fluid, while it is generally impeded in shear-thickening fluids. The average Nusselt number values have also been interpreted in terms of the usual Colburn heat transfer factor (j). The functional dependence of the average Nusselt number on the dimensionless parameters (Re, n, Pr, E) has been presented by empirically fitting the numerical results for their easy use in process design calculations. © 2007 Elsevier Ltd. All rights reserved.
Citation: International Journal of Heat and Mass Transfer (2008), 51(44020): 1838-1853
URI: https://doi.org/10.1016/j.ijheatmasstransfer.2007.06.032
http://repository.iitr.ac.in/handle/123456789/2437
Issue Date: 2008
Keywords: Elliptical cylinder
Nusselt number
Power-law fluids
Prandtl number
Reynolds number
Shear-thickening
Shear-thinning
ISSN: 179310
Author Scopus IDs: 14521775900
24923973200
56657757000
Author Affiliations: Bharti, R.P., Department of Chemical Engineering, Indian Institute of Technology, Kanpur, 208 016, India
Sivakumar, P., Department of Chemical Engineering, Indian Institute of Technology, Kanpur, 208 016, India
Chhabra, R.P., Department of Chemical Engineering, Indian Institute of Technology, Kanpur, 208 016, India
Corresponding Author: Chhabra, R.P.; Department of Chemical Engineering, Indian Institute of Technology, Kanpur, 208 016, India; email: chhabra@iitk.ac.in
Appears in Collections:Journal Publications [CH]

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