WIT Press


Laminar Entry Flow Of Herschel-Bulkley Fluids In A Circular Pipe

Price

Free (open access)

Paper DOI

10.2495/AFM000131

Volume

29

Pages

10

Published

2000

Size

697 kb

Author(s)

R.C. Gupta & Y. Zhao

Abstract

Fargie and Martin used an elegant approach to obtain the entry region flow of Newtonian fluids in a circular pipe. They combined the differential and integral momentum equation in such a way that elimination of pressure gradient leads to a closed form solution. In this paper we extend this pro- cedure to study the laminar entry region flow of Herschel-Bulkley fluids in a circular pipe. The solution procedure involves certain approximations. Applicability of these approximations to Herschel-Bulkley fluids has been discussed and the flow description has been obtained for various values of the flow behavior index and the Herschel-Bulkley number. Results have been illustrated graphically and compared with other available solutions: momentum integral and momentum energy integr

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