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TOPIC: Weird instabilities in model

Weird instabilities in model 7 years 8 months ago #25422

  • r.clayton
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Please can someone help me with my model?

I have attached my

and it is showing some odd activity on the right boundary. The boundary is set as open (444) but there seems to be some odd instabilities on the right side of the domain that start around step 1500 and increase to a maximum about step 2000.

I have checked the CFL number and it is around 0.25 and I've also tried changing the free surface gradient compatibility but it hasn't helped.

Has anyone encountered this before or know how to fix it?

Thanks.
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Weird instabilities in model 7 years 8 months ago #25424

  • r.clayton
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Don't think the results file was attached - so I've tried to attach it again
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Weird instabilities in model 7 years 8 months ago #25428

  • r.clayton
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I have put it on dropbox here as the file was too large:
www.dropbox.com/s/kdju60zxf7k8sqi/Result...d_graphprintout?dl=0
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Weird instabilities in model 7 years 8 months ago #25432

  • riadh
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Hello

We can not access to dropbox from our offices, please use rather google drive.
Please deposit all the model in order to check the case and your options.

with my best regards

Riadh
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Weird instabilities in model 7 years 8 months ago #25434

  • r.clayton
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Thanks Riadh,

I have uploaded it to google drive. Let me know if you can't access it.

drive.google.com/open?id=0BzqD11px814YTl9XdzJ6S3c4emM

Rob
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Weird instabilities in model 7 years 8 months ago #25446

  • riadh
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Well received !
But I need all the model to understand what's going wrong. Is all your subroutine is in 444 ?
please send me your steering file and the other imputs.

with my best regards

Riadh
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