Calculation stops before the end
Altair EmployeeGood evening,
I use Virtual Wind Tunnel for more than one month now and I never had big problem with it. But recently, the calculation that I run stop before the end without any explanation. Indeed, I put into the parameter a run time of 8 seconds and around 3 seconds (or less) a report is created and the calculation stop. It seems that the sofware judges by itself that it has converged or something, but when I look at the results, the flow is not contant and the drag coefficient is twice bigger than the one expected.
Does anybody already have the same problem ?
Answers
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It is difficult to say much without looking at the case.
Could you please upload the PDF report and vwtAnalysis.1.Log file?
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Oh yes, of course. There are the files. Sorry for the length of it.
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It seems that something went wrong with file system, either the disk was if local disk or network error if using network storage. AcuSolve stopped because it could write any more data.
*** ASSERTION in Function <iopPutRealF> File <iopLow.c> Line <2631>
acuSolve: *** unable to write <1> reals in binary file <ACUSIM.DIR/vwtAnalysis.1.osi> token <1138402> near <totArea>
acuRun: *** ERROR: error occurred executing acuSolve'0 -
Ok, but how can I solve this problem ?
Because I noticed that when I do the calculation in Steady mode, everything is going well, but when I do it in transient mode, nothing works.
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Are you running out of disk space, wherever these solver files are being written?
- Create more space on the disk or
- Increase the Result > Output frequence to maybe 200 or so instead of default 50.
As seen in your PDF, solver does run in transient mode. So no issue with solver. SInce AcuSolve cannot write to disk, it exits.
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I try what you said, and it still stops after fews seconds. Now I tried to do the same calculation with less steps to see if there is an improvement.
What I don't understand is that I have enough space on the disk so it is strange that it stops because of a lack of space.
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This seems very strange. To rule out any modeling errors, please upload .stmod, .inp and .Log files here.
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I'm sorry it seems that can just upload pdf files on the forum.
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