open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello,

I've created a model with Sisyphe to simulate the sediment transport on a shore ( for more details see post: Sysiphe general questions / the case of gravel beach erosion).
On the shoreface of my study, I have two different sediment transports: along shore and cross shore.
I know that sisyphe is taking in account for the longshore transport (due to the wave driven current) because I'm coupling it with TELEMAC2D.
But the cross shore transport is a bit different and is caused by the action of the waves on the swash zone (during the backwash). This transport forces the sediments to move offshore.
From what I've read in the manual, the waves are taken in account into Sisyphe. But it is only to parameter the variation of the shear stress because of the wave effetcs.

So my question is:

Does sisyphe simulate the sediment transport across the shore in the case of coastal modelling ?

Best Regards,
Rémi

Dear Rémi,
thanks a lot for your email. Actually, cross-shore transport is one of the processus that we would like to implement/abord soon in the context of the Telemac Modelling System (even at different scales).

Would you like to be involved in the discussions? If yes, please drop me an email to This email address is being protected from spambots. You need JavaScript enabled to view it. and I'll contact directly to you.

Many thanks,
Pablo

Hello Pablo,

I would be glad to be involved in the discussions. I'm going to send you an email to introduce myself. Thank you for the offer !

I have one more thing I would like to clarify...
I've noticed in my simulations that the slope effect was impacted a lot on my results (Fig). When I'm taking into account this effect, I got completly different patterns of the evolution of the bottom . Based on the formula used in Sisyphe, I understand these results (it is the consequence of the deviation formula of the solid transport, right ? ). But I'm wondering if the slope has such an impact on the solid transport, and especially on its direction ? (Because in my case the current is nearly perpendicular to the coast and the shoreface slope is around 10%.. Fig.)

Thanks again,

Regards,
Rémi

Dear Rémi,
in many cases, bed slope effects can have a very strong impact on your simulation results, in particular in the present of large slopes, by the fact that it adds a component of the weight (gravity) in the slope direction that of course affects the solid transport.
Furthermore, in some applications this process has showed to be crucial to reproduce some morphodynamics elements, as is the case of the formation and propagation of alternate bars. I'll be presenting some results on this subject in the next TUC.

all the best,

Pablo

Hello all,

This is a very interesting topic and I would like to learn more about any development that is going on. Is there any branch in SISYPHE sources I can study or test?

Regards,
Costas