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Old   August 12, 2011, 06:23
Default Error in CFX Run
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Hamed
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Dear friends,
I am doing a simulation in CFX but the software show an error and stop the simulation. In fact I have changed the mesh quality and the boundary conditions but the software do errors for all mesh quality and BCs. The error message is as follows:

| |
| The ANSYS CFX solver exited with return code 1. No results file |
| has been created. |
+--------------------------------------------------------------------+

End of solution stage.

+--------------------------------------------------------------------+
| Warning! |
| |
| The ANSYS CFX Solver has written a crash recovery file. This file |
| has been saved as D:\Thesis\CFX Runs\3D-CFX\Coarse |
| Mesh\Coarse3_002.res.err and may be an aid to diagnosing the |
| problem or restarting the run. More details should be available |
| in the solver output section of the output file. |
+--------------------------------------------------------------------+
Please help me to solve this problem.
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Old   August 12, 2011, 07:25
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Glenn Horrocks
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Need more details. Please attach an output file. Don't put it on the forum as text directly, just as an attachment.
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Old   August 12, 2011, 08:30
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Dear glenn,
The *.out file is attached.

Sincerely
Attached Files
File Type: txt 3_002.txt (17.9 KB, 20 views)
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Old   August 12, 2011, 08:39
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hi
read about GET_GVAR in cfx documentation.
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Old   August 12, 2011, 09:42
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Dear Sajjad,
Are you sure there is relation between my problem and " GET_GVAR" ? Could you please tell some explanations ? In fact I have searched the CFX help but I did not find any thig about " GET_GVAR" ?

Sincerely
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Old   August 12, 2011, 11:20
Default hi hamed
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im not sure about your prob and "GET_GVAR" .

but i know that there is a subroutine in cfx that is exactly in this name.

the subroutine "GET_GVAR" get the gradiant of the variable that you define for the software.

you can find more about it in "user fortran routine"

i hope i made it clear for you.
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Old   August 13, 2011, 07:16
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Are you using user fortran?

If not, then remove the physics one at a time until the cause of the problem is obvious. You have probably missed setting something on the multiphase setup, so delete the particle stuff and see if the error still occurs.
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Old   August 16, 2011, 08:46
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I read your .out file, Are you using the discrete model (lagrange model), I suggest you to use Global Dynamic control model and then select the option multiphase.
Besides, You should let ansys to choose the Initial value, change it for automatic.
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Old   August 16, 2011, 14:06
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Dear Glenn,
In fact I am trying on this problem for a week , in fact when I delete the solid phase the problem does not occurs but when I add solid phase an error occurs, I do not know what is the problem, could you please help me on this problem?
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Old   August 16, 2011, 18:46
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So that confirms the problem is with your solid phase setup.

I note the size of your particles is nanometers. Are you sure you will get any slip at all with such fine particles? If you are not going to get slip then that simplifies things a lot. And how do the particles interact with the flow? Do they affect the flow at all? How?
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Old   August 16, 2011, 20:39
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Dear Glenn,
In fact as mentioned in the CFX help, I define " free slip wall" for solid phase but it also errors, moreover this problem does not related to nano sized particle because when I change the size of particle to mm size also this problem occurs.

sincerely
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Old   August 17, 2011, 18:31
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You have not addressed my question. Quite simply, if there is no slip between the phases because the size of the particles is so small then you do not need a multiphase approach and this will simplify the setup a great deal.

Do you expect significant slip between the phases?
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