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Variation of the recirculation length of Newtonian and non-Newtonian power-law fluids in laminar flow through a suddenly expanded axisymmetric geometry

Variation of the recirculation length of Newtonian and non-Newtonian power-law fluids in laminar flow through a suddenly expanded axisymmetric geometry

Authors :
Nag, Debabrata
Datta, Amitava
Source :
Journal of Fluids Engineering. Feb, 2007, Vol. 129 Issue 2, p245, 6 p.
Publication Year :
2007

Abstract

A numerical study has been carried out for the laminar flow of Newtonian and non-Newtonian power-law fluids through a suddenly expanded axisymmetric geometry. Mathematical correlations are proposed for the prediction of the length of the recirculating eddy in terms of Reynolds number, expansion ratio and rheological parameters. A wide range of expansion ratios (1.25 [less than or equal to] ER [less than or greater than] 8.0) has been covered for the Newtonian fluid and both the shear-thinning and shear-thickening flow characteristic fluids have been considered for the non-Newtonian fluids. [DOI: 10.1115/1.2409361]

Details

Language :
English
ISSN :
00982202
Volume :
129
Issue :
2
Database :
Gale General OneFile
Journal :
Journal of Fluids Engineering
Publication Type :
Academic Journal
Accession number :
edsgcl.160332755