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Repeated material or unnasigned material when CFD crashes

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Message 1 of 2
juan_cardenas_collazos
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Repeated material or unnasigned material when CFD crashes

Hi everyone,


Latetly, I've been working on a turbomachinery analysis with rotating region and everything is going right. But in some analysis my simulation suddenly stops and I got error "Analysis has stopped because the Solver has exited Unexpectedly" at some specific iteration (e.g sometimes 245 other 116) and I have to close but when I re-open again my file some of my materials got repeated or incorrectly allocated and I can't start my simulation at that point, I have to start again from 0 :(((


It's so annoying and this happens every time. I would like some help or any advice.

Thanks.

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Message 2 of 2


@juan_cardenas_collazoswellnow near me wrote:

Hi everyone,


Latetly, I've been working on a turbomachinery analysis with rotating region and everything is going right. But in some analysis my simulation suddenly stops and I got error "Analysis has stopped because the Solver has exited Unexpectedly" at some specific iteration (e.g sometimes 245 other 116) and I have to close but when I re-open again my file some of my materials got repeated or incorrectly allocated and I can't start my simulation at that point, I have to start again from 0 :(((


It's so annoying and this happens every time. I would like some help or any advice.

Thanks.


Hi there!  you're facing a frustrating issue with your turbomachinery analysis, and I can understand how repeatedly encountering this error can be quite annoying. Based on what you've described, there are a few potential causes and solutions to consider. I'll go over some general troubleshooting steps that may help resolve the problem: 

  • Check Solver Settings: Ensure timestep, convergence criteria, and memory usage are optimal for your simulation.
  • Verify Mesh Quality: Ensure the mesh, especially around the rotating region, is refined and free from distortions.
  • Inspect Boundary Conditions: Double-check your boundary conditions and material properties to ensure they're correctly applied and consistent.
  • Examine Solver Logs: Look for additional error details or warnings in the solver logs before the crash.
  • Backup Frequently: Save backups of your project to avoid losing progress after crashes.
  • Recreate Project File: If material allocation is corrupted, try creating a new project file and transferring components carefully.

 

 

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