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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