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February 28, 2007, 09:08 |
Now newtonian convergence
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#1 |
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Hi, Im simulating a steady flow in a tube. As its a 'well-behaved' flow, i used extruded 2d simulation. For the newtonian fluid I got great results. But for the non-newtonian fluid it either doesnt converge or the results arent physically correct. How can can I get a good result? I've tried chganging the mesh, altering the inlet velocity, using other turbulence models and nothing worked. Thanks
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February 28, 2007, 09:22 |
Re: Now newtonian convergence
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#2 |
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Dear Gustavo,
What "non-newtonian model" are you using? Opaque |
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February 28, 2007, 10:26 |
Re: Now newtonian convergence
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#3 |
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Visc=k*y^(n-1), and I also bound the equation with a min and a max, just like in the tutorial.
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February 28, 2007, 10:40 |
Re: Now newtonian convergence
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#4 |
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Dear Gustavo,
I assume that "y" mean shear strain rate, and not "y coordinate".. Correct? Opaque.. |
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February 28, 2007, 18:27 |
Re: Now newtonian convergence
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#5 |
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Yes...
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