TELEMAC-MASCARET Forum: Deposit on the border

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TOPIC: Deposit on the border - SISYPHE

Deposit on the border - SISYPHE 6 years 6 months ago #30198

lolive

Hello,

I am working on a hydrosedimentary transport project with TELEMAC / SISYPHE and I have got a problem that I can not solve. I have five boundaries conditions, but there is only one border where sediments are injected. The problem is that part of these sediment does not move, making deposits ON THIS BORDER that can achieve 1,5 Km high... We do not have this problem in other places because other sediments can normally move . I have already tried to change the MPM coefficient in order to allow a better thrusting capacity, but deposits are still a problem. I have also tried to use the keyword “TREATMENT OF FLUXES AT THE BOUNDARIES” changing the value to 2 on that border, but nothing changed.

I was wondering if you could help me with that.

Thank you very much in advance
Lucas

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Deposit on the border - SISYPHE 6 years 6 months ago #30200

Pablo OFFLINE Moderator Posts: 316 Thank you received: 121	Hello Lucas, Did you check your velocity/shear velocity field there? Are the boundary conditions well imposed (cli file), as well as the hotstart file? Hope it helps, Pablo
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Deposit on the border - SISYPHE 6 years 6 months ago #30203

lolive	Hi Pablo, First of all, thanks for your answer!! Yes, I have already checked it. In fact, before doing the hydrosedimentary simulation, I did the hydraulic simulation using the same model. That simulation gave me the velocity field that now I am using as the previous computation file. So, I don't believe it could be the reason of my problem :/ Thank-you very much :)
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Deposit on the border - SISYPHE 6 years 6 months ago #30205

Pablo OFFLINE Moderator Posts: 316 Thank you received: 121	OK In your BC file, do you have something like that for the inflow boundary (see 8th column)?: 4 5 5 0.000 0.000 0.000 0.000 5 0.000 0.000 0.000 1 1 cheers Pablo
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Deposit on the border - SISYPHE 6 years 6 months ago #30207

lolive	Yes! The last two numbers are different (I think they are related to the node number), but the other ones are exactly the same. Do you think it could be related to our problem?
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Deposit on the border - SISYPHE 6 years 6 months ago #30209

Pablo OFFLINE Moderator Posts: 316 Thank you received: 121	No, I don't think this could be related to your problem.
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Deposit on the border - SISYPHE 6 years 6 months ago #30211

lolive	OK. Anyway, thank you very much. Best regards Lucas
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Deposit on the border - SISYPHE 4 years 5 months ago #36098

Ding OFFLINE Fresh Boarder Posts: 22 Thank you received: 1	Hi,Lolive I'm doinga simulation and meeting the similar problem, most of deposition happended in the inlet boundary, do you solve your problem and could you please give me some suggestion? Thank you.
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