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Old   November 17, 2009, 09:40
Post Herschel-Bulkley problem
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Jan Mulder
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Hi all,

I am trying to model concrete. I use Herschel-Bulkley as viscosity model. My calculation either gives an error or becomes instable, but only when I use tau0.

I have a 2D model of a pipe with a velocity on one side and a pressure on the other side.

I have found examples with Herrschel-Bulkley model but not in which tau0 is not 0. Which I find strange
Does anybody have a similar problem?
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