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July 2, 2013, 09:08 |
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#21 |
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rayan
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July 2, 2013, 09:39 |
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#22 |
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steven
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July 2, 2013, 10:00 |
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#23 |
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rayan
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I decreased at least the different under-relaxation factor (0.1 and 0.2) because in the beginning of simulation we have very significant disruption to overcome so you should lower these values, then when the solution begins to stabilize you can increase it gradually
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July 2, 2013, 11:33 |
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#24 | |
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steven
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Quote:
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July 3, 2013, 01:33 |
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#25 |
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Maxime Perelli
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Steven,
Is your problem fixed? Don't focus on reversed flow warning. The convergence is the one you need to fix. Maybe you should consider & switch on unsteady solver, if rayan's tipp didn't help you. Did you also try to compute on a much finer grid?
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In memory of my friend Hervé: CFD engineer & freerider |
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July 3, 2013, 08:21 |
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#26 | |
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steven
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Quote:
I have solved the problem of convergence. Do you remember the gambit file that i sent to you. I united the two volumes in the center, then it worked without warning under the model 'outflow'. This makes me confused, I don't know why this works. Do you know what happened? |
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July 3, 2013, 08:56 |
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#27 |
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Maxime Perelli
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Good to read you solved your problem.
But sounds weird. Anyway it is solved (maybe an internal surface or whatever, but I checked and everything was ok)
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July 3, 2013, 09:30 |
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#28 | |
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steven
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Quote:
Anyway, Thank you so much. |
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July 3, 2013, 09:53 |
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#29 |
Super Moderator
Maxime Perelli
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yes, typical error in Gambit
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In memory of my friend Hervé: CFD engineer & freerider |
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July 5, 2013, 07:09 |
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#30 |
Member
steven
Join Date: Jun 2013
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Hello Max,
I have a question, how can i creat a face to mesure the pressure of my larger tube depending on the lenghth? Thank you. Steven |
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July 5, 2013, 07:19 |
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#31 |
Super Moderator
Maxime Perelli
Join Date: Mar 2009
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you can do that in fluent, post-processor.
I cannot remember the exact name, I can tell you on Monday when I return at the office. Kids are giving more troubles than mesh....
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In memory of my friend Hervé: CFD engineer & freerider |
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July 5, 2013, 07:24 |
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#32 |
Senior Member
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Hi, I'd go to Insert/Location/Plane in CFD-Post. Then define the plane (e.g., z=constant) and plot the desired variable on it.
Cheers, Michujo. |
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July 5, 2013, 07:36 |
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#33 |
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steven
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July 5, 2013, 07:38 |
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#34 |
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steven
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