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Conduit flow of an incompressible, yield-stress fluid

 

作者: Alexandra J. Taylor,   Simon D. R. Wilson,  

 

期刊: Journal of Rheology  (AIP Available online 1997)
卷期: Volume 41, issue 1  

页码: 93-102

 

ISSN:0148-6055

 

年代: 1997

 

DOI:10.1122/1.550802

 

出版商: The Society of Rheology

 

关键词: Yield stress;Bingham fluid;Variational principle

 

数据来源: AIP

 

摘要:

The steady flow of an incompressible material of the Bingham viscoplastic type along a rectangular duct is calculated. This flow has importance in a number of geophysical problems. A numerical solution to the problem is found using finite differencing of the partial differential equation governing the fluid motion. The flow is seen to consist of a plug in the center of the duct with dead regions of “no-flow’’ at the corners, due to the rectangular cross section. The variation of this flow pattern as a function of two nondimensional parameters, the yield stress and the aspect ratio, is investigated.

 

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