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February 19, 2010, 22:26 |
Help with CFX-Solver Manager
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#1 |
New Member
David
Join Date: Feb 2010
Posts: 5
Rep Power: 16 |
Hey People,
I am a student trying to work on my Disso using CFX. I have a problem. Every time I have tried to run the solution in CFX Solver Manager, a windows message shows up saying "solver-hpmpi.exe has encountered a problem and needs to close." So I send the report, and CFX Solver Manager says, " An error has occurred in cfx5solve: The ANSYS CFX solver could not be started, or exited with return code 255: . No results file has been created. " This has happened everytime I have tried to run this simulation and its always on outer loop iteration = 2. Please could you help me since time is getting really short and I need results. The simulation I am trying to run is a rotor stator arrangement which is very similar to the one in the ansys tutorials. HELP!!! |
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February 20, 2010, 00:35 |
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#2 |
Member
SanS
Join Date: Mar 2009
Posts: 41
Rep Power: 17 |
Hi,
Have you been able to run the tutorial problem? I have got this error in the past for a variety of reasosn, could be mesh, setup etc. Try to debug one at a time. I would start with a remesh. |
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February 20, 2010, 05:22 |
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#3 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,703
Rep Power: 143 |
If it occurs on outer loop iteration 2 then it is a convergence problem. You need to improve the stability of your simulation - are your physics correct? Is the mesh of high enough quality? Is your time step small enough?
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February 20, 2010, 15:35 |
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#4 |
New Member
David
Join Date: Feb 2010
Posts: 5
Rep Power: 16 |
Thank you.
I tried to change a few of the details for this run, but now, I won't even start up. As soon as I try to start the run, the same message is displayed and this time, it does no iterations.... Help, this is getting worse |
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February 20, 2010, 15:59 |
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#5 |
Senior Member
Fatema Zandi Goharrizi
Join Date: Mar 2009
Posts: 158
Rep Power: 17 |
did you get help from the tutorial you've mentioned. as the friends say more than one exact reason can have role here. so because of time the tutorial is a good start. chang the time scale gradually and little by little. test all the ways one by one to find the best model, don't take all of them in one step
good luck |
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February 21, 2010, 03:32 |
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#6 |
Senior Member
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are you running a solver with parallel mode?
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February 21, 2010, 08:26 |
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#7 |
New Member
David
Join Date: Feb 2010
Posts: 5
Rep Power: 16 |
No, I am using Serial mode
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February 21, 2010, 16:04 |
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#8 |
Senior Member
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check the effective factors as glenn said.
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February 21, 2010, 17:39 |
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#9 | ||
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,703
Rep Power: 143 |
Quote:
I repeat my previous post: Quote:
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February 23, 2010, 17:27 |
Thank you
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#10 |
New Member
David
Join Date: Feb 2010
Posts: 5
Rep Power: 16 |
People, I don't believe you can imagine how grateful I am for you help.
I have my first set of results, and I'm on my way to getting more. It was the time steps. made them 10-4 and it worked Thank you again |
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