open TELEMAC-MASCARET The mathematically superior suite of solvers

Thank you Pablo for your answer.

I was not specifying anything about the consolidation model, so I guess it was turned off, as it is the default configuration.

I made the tests you suggested.

MUD CONSOLIDATION = NO did not change the results.

MUD CONSOLIDATION = YES and CONSOLIDATION MODEL = 1 did not change the results neither.

MUD CONSOLIDATION = YES and CONSOLIDATION MODEL = 2 did change the results a little bit (see difference between this simulation and the one without mud consolidation in term of final bottom elevation in attachment) but did not solve the problem.

As a reminder, I am only using one mud layer.

Here is the attachment.

Dear Michiel and Pablo,

I have been busy with other stuffs lately, but I would like to come back to the problem described in this topic.

Would you have any other suggestions since my lasts posts answering your last suggestions?

Thank you for your help.

Hello,
By taking a look to your files, a morphological factor of 705.5 seems suspect:
MORPHOLOGICAL FACTOR = 705.5

Furthermore, the use of this accelerators is not recommended for suspended sediment transport as there are some considerations related with the CFL number and the solution of the advection-diffusion equation. There are some articles in the literature that study this issue.

Please try a simulation without any accelerator and come to us for feedback,

Best wishes,

Pablo

It might be the problem, indeed.

When I check the mass balance for high Morfac, I can very high error on volume (>1000). Can you tell me what is exactly this error on volume and how it is computed?

That problem does not seem to occur for lower Morfac, but I need to check further.

Could you please give some references about this CFL issue when using Morfac?

Thank you for your help.

Hello,
Michiel has published something on that:
eprints.hrwallingford.co.uk/590/1/HRPP54...eleration_factor.pdf

There are some studies done at Delft/Deltares: repository.tudelft.nl/islandora/object/u...collection=education

And classical references as:
J.A. Roelvink. Coastal morphodynamic evolution techniques. Coastal
Engineering, 53(2-3):277–287, 2006.
H.J. De Vriend, M. Capobianco, T. Chesher, H.E. De Swart,
B. Latteux, and M.J.F. Stive. Approaches to long-term modelling of
coastal morphology: a review. Coastal Engineering, 21(1-3):225–269,
1993.

Best wishes,

Pablo