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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1877
Title: CFD Analysis of two-dimensional non-newtonian power-law flow across a circular cylinder confined in a channel
Authors: Bijjam S.
Dhiman, Amit KumarK.
Published in: Chemical Engineering Communications
Abstract: Flow of non-Newtonian power-law fluids across a long circular bluff body confined symmetrically between infinitely long two parallel plane walls is investigated numerically by solving the continuity and momentum equations using the finite volume method-based solver Fluent. The numerical calculations are performed in the full computational domain for the following ranges: Reynolds number = 50-150 and power-law index = 0.4-1.8 (covering shear-thinning, Newtonian, and shear-thickening behaviors) for the blockage ratio of 0.25. Global characteristics such as drag and lift coefficients, and Strouhal number and derived variables such as stream function are calculated for the above range of conditions. It is observed that the shear-thinning behavior yields a lower value of the time-averaged drag coefficient than the corresponding Newtonian value; however, an opposite trend is observed in the shear-thickening behavior. The Strouhal number increases with increasing Reynolds number for the fixed value of the power-law index. © 2012 Taylor and Francis Group, LLC.
Citation: Chemical Engineering Communications (2012), 199(6): 767-785
URI: https://doi.org/10.1080/00986445.2011.625064
http://repository.iitr.ac.in/handle/123456789/1877
Issue Date: 2012
Keywords: Computational fluid dynamics (CFD)
Cylinders
Fluid mechanics
Laminar flow
Rheology
Vortex flow
ISSN: 986445
Author Scopus IDs: 36902587300
8548369300
Author Affiliations: Bijjam, S., Department of Chemical Engineering, Indian Institute of Technology Roorkee, India
Dhiman, A.K., Department of Chemical Engineering, Indian Institute of Technology Roorkee, India
Corresponding Author: Dhiman, A. K.; Department of Chemical Engineering, Indian Institute of Technology Roorkee, 247 667India; email: dhimuamit@rediffmail.com
Appears in Collections:Journal Publications [CH]

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