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Contributor
JMatteau
Posts: 13
Registered: ‎03-11-2013

Re: Error Message - the Solver has exited Unexpectedly HELP!!!

03-14-2013 09:35 AM in reply to: wildej

For the moment the simulation is running smoothly, I'm keeping my fingers crossed :smileyindifferent:

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Contributor
JMatteau
Posts: 13
Registered: ‎03-11-2013

Re: Error Message - the Solver has exited Unexpectedly HELP!!!

03-14-2013 10:17 AM in reply to: JMatteau

HI Jon,

 

It just crashed again. It reached iteration 67 and then I got the error message. I've putted my cfz file in the drop box and I also added the log file in it. Shoul I increase the lenght of th I/O?

 

Best regards,

 

*************************************************************

[13:07:18]  output:job aborted:
[13:07:18]  output:[ranks] message
[13:07:18]  output:[0] terminated
[13:07:18]  output:[1] process exited without calling finalize
[13:07:18]  output:[2-4] terminated
[13:07:18]  output:---- error analysis -----
[13:07:18]  output:[1] on wks-a063
[13:07:18]  output:C:\Program Files\Autodesk\Simulation CFD 2013\SimCFDSolver.exe ended prematurely and may have crashed. exit code 0xc0000005
[13:07:18]  output:---- error analysis -----
[13:07:18]  output:C:\Program Files\Autodesk\Simulation CFD 2013>set E=-3
[13:07:18]  output:C:\Program Files\Autodesk\Simulation CFD 2013>exit -3
[13:07:18] Finished with exit code = -3
[13:07:21] Processing solver exited

 

*************************************************************

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wildej
Posts: 936
Registered: ‎08-25-2011

Re: Error Message - the Solver has exited Unexpectedly HELP!!!

03-14-2013 11:25 AM in reply to: JMatteau

Please could you share the summary (sum) and status (st) files?

If you have not made the recommended changes of extending the inlet and outlets then yes, please do so.



Jon Wilde
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Contributor
JMatteau
Posts: 13
Registered: ‎03-11-2013

Re: Error Message - the Solver has exited Unexpectedly HELP!!!

03-14-2013 11:57 AM in reply to: wildej

Hi Jon,

 

Yes I did extended the inlet and outlet. I was wondering if I should extend them even more.

Capture.JPG

 

Length is approximately 5"

 

There is no recirculation in the outlet.


As for the sum and st files, I restarted the solving at iteration 60 and they were erase by the neww solving. I soved correctly from iteration 60 to iteration 100. I will retart the solving from iteration 100 to iteration 400. More than likely there will an error and I will add to the drop box the sum and st files. The CFZ(with the extend I/O) file is still in the dropbox.

 

Best regards,

Jonathan Matteau

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Contributor
JMatteau
Posts: 13
Registered: ‎03-11-2013

Re: Error Message - the Solver has exited Unexpectedly HELP!!!

03-15-2013 05:55 AM in reply to: JMatteau

Hi Jon,

 

As predicted the sover has exited unexpectedly.

It achieved loose convergence at iteration 128. Then I restarded the solving with a tighter convergence. I converged at iteration 168 but exited with the error message : the Solver has exited Unexpectedly. The good news is that I got all my results anyway.

 

[08:35:17]  output:Flat lines detected in Convergence Monitor - Auto Stop.
[08:36:08]  output:job aborted:
[08:36:08]  output:[ranks] message
[08:36:08]  output:[0-3] terminated
[08:36:08]  output:[4] process exited without calling finalize
[08:36:08]  output:---- error analysis -----
[08:36:08]  output:[4] on wks-a063
[08:36:08]  output:C:\Program Files\Autodesk\Simulation CFD 2013\SimCFDSolver.exe ended prematurely and may have crashed. exit code 255
[08:36:08]  output:---- error analysis -----
[08:36:08]  output:C:\Program Files\Autodesk\Simulation CFD 2013>set E=-3
[08:36:08]  output:C:\Program Files\Autodesk\Simulation CFD 2013>exit -3
[08:36:08] Finished with exit code = -3
[08:36:11] Processing solver exited

 

Summary since the Inlet / Outlet extension

Error message at iteration 67

Restarted solving

Loose convergence at iteration 128

Restarted solving

Normal Convergence at iteration 168

Exited with the error message

 

I can confirm that extending the I/O made the model a lot more stable and converged way more easily. The error message is still there but seems to appear less offen. I will now make the same changes on my other geometry that was less stable. I will make sure that when it crash I will put the sum and st file in the dropbox

 

BEst regards,

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Contributor
JMatteau
Posts: 13
Registered: ‎03-11-2013

Re: Error Message - the Solver has exited Unexpectedly HELP!!!

03-15-2013 07:34 AM in reply to: JMatteau

Update concerning Error Message - the Solver has exited Unexpectedly during the Meshing phase.

 

If you keep getting this message during the meshing phase I found a quick way to fix it. For large model, it is often hard to define all the meshing manually. If you reach the point where you don't know what to do to solve this issue, just go in the flag manager and set the flag

 

-> mesh_boundarylayer_blend : 1

 

It worked for me and I hope it can help other users.

 

Best regards,

Jonathan Matteau

 

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Contributor
JMatteau
Posts: 13
Registered: ‎03-11-2013

Re: Error Message - the Solver has exited Unexpectedly HELP!!!

03-18-2013 05:30 AM in reply to: wildej

Hi Jon,

 

I am still getting some error messages: the Solver has exited Unexpectedly. It usually happens before solving. I don't know what is causing the crash because if I restart the solving it will usually solve succesfully. I've putted my files in the dropbox:

 

CFD_Hole_B4_support.cfz

mesh

mesher

Scenario 1.st

Scenario 1.sum

SimCFDJobManager

Simulation CFD

solver

 

Any ideas on what causing this ?

 

Best regards

Jonathan Matteau

Ingénieur junior mécanique / Engineer junior mechanical

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Product Support
wildej
Posts: 936
Registered: ‎08-25-2011

Re: Error Message - the Solver has exited Unexpectedly HELP!!!

03-18-2013 08:18 AM in reply to: JMatteau

Are you running from a local drive yes? If it fails before the solve this is probably the issue.

Either that or you are running out of memory.

 

 

Have you considered running a 1/2 or even 1/4 model to speed things up here?

 

I have it running fine but I did tweak the mesh. Autosized and then turned on Gap Refinement (3 Gap Elements set in the Advanced window).

Press the Refine button and then Solve!


Seems to be working great, please try that.



Jon Wilde
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Contributor
JMatteau
Posts: 13
Registered: ‎03-11-2013

Re: Error Message - the Solver has exited Unexpectedly HELP!!!

03-18-2013 08:39 AM in reply to: wildej

Hi Jon,

 

Yes I am on the local drive. Like I was saying it will work and in fact I got it to converge this morning without any changes. When I got the error message all I had to do is to restart the solving and it worked. My question is why would it crash the first time and not the second time ? What is causing that random crash ? Why when I press solve there is a chance of a possible crash when in fact the model work fine?

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Product Support
wildej
Posts: 936
Registered: ‎08-25-2011

Re: Error Message - the Solver has exited Unexpectedly HELP!!!

03-18-2013 08:53 AM in reply to: JMatteau

OK, I suggest you make those changes to help with speed and accuracy anyway.

 

The crashes could be write access/admin issues. Have you tried right clicking and launching CFD as admin, I wonder if you still get the error then?



Jon Wilde
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