TELEMAC-MASCARET Forum: BENCHMARK BED LOAD TRANSPORT (1/1)

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TOPIC: BENCHMARK BED LOAD TRANSPORT

BENCHMARK BED LOAD TRANSPORT 7 years 10 months ago #24819

jose2kk
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Expert Boarder
Posts: 161
Thank you received: 59

Hi there!

I have been working with sisyphe coupled with telemac2d for my thesis (Mechanical Engineering student), I have gotten interesting results with a Hydraulic Jump with erodable bottom, but i wanted to know if someone of you have an analitic solution of any sediment problem, because i do not have way to compare if the results i got with telemac2d are accurate.

Best regards!
Jose Morales.
Maracaibo, Venezuela.

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BENCHMARK BED LOAD TRANSPORT 7 years 10 months ago #24829

Pablo OFFLINE Moderator Posts: 316 Thank you received: 121	Dear José, As starting point, please take a look to the following works: Tassi et al. / Comput. Methods Appl. Mech. Engrg. 197 (2008) 2930–2947 Postacchini et al. / Advances in Water Resources 38 (2012) 13–26 Siviglia et al. / Advances in Water Resources 52 (2013) 243–260 Best wishes, Pablo
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BENCHMARK BED LOAD TRANSPORT 7 years 9 months ago #25002

jose2kk OFFLINE Expert Boarder Posts: 161 Thank you received: 59	Dear Pablo, I would like to establish free flow boundary condition in a channel at the outlet, i tried to do it using 4 4 4 in the boundary conditions file, but i had a problem at that boundary, because there is a really high flow entering and no exiting, could you please help me with this. Best regards, José
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BENCHMARK BED LOAD TRANSPORT 7 years 9 months ago #25006

Pablo OFFLINE Moderator Posts: 316 Thank you received: 121	Please refer to my previous post. Pablo
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BENCHMARK BED LOAD TRANSPORT 7 years 9 months ago #25341

jose2kk OFFLINE Expert Boarder Posts: 161 Thank you received: 59	Dear Pablo, First at all, i would like to thank you for the support you have gave me. I also want to ask you about the influence of MPM Coefficient on bed evolution, could you explain me how does it works and when do i have to use it? Best regards, Jose Morales Venezuela
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BENCHMARK BED LOAD TRANSPORT 7 years 9 months ago #25343

Pablo
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Posts: 316
Thank you received: 121

Hi Jose,
To put simply, the MPM coefficient modifies the intensity of the (bedload) sediment transport. This value is by default equal to 8 but can be modified and used as a calibration parameter. In the Exner equation, the divergence operator is applied to the sediment fluxes and therefore affecting the temporal variation of the bottom elevation. Please take a look to the Sisyphe's manual v7p2.

There are tons of articles, books, etc. about this topic. Please find below some good references.

*The (famous) e-book by Prof. Gary Parker
* W. Wu (2007). Computational River Dynamics, Taylor & Francis, UK, 494 p.
* Marcelo Garcia Sedimentation Engineering: Processes, Measurements, Modeling, and Practice
...

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