Error in CFX Run
 

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.

Need more details. Please attach an output file. Don't put it on the forum as text directly, just as an attachment.

Dear glenn,
The *.out file is attached.

Sincerely

hi
read about GET_GVAR in cfx documentation.

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

hi hamed
 

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.

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.

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.

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?

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?

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

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?