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Hi,

I have a question regarding the extraction of unsteady sediment transport results.
How can I find the maximum evolution and free surface of each node through the calculation time?

Example.
Node(a) time(1): 0.2, time(2): 0.3, time(3): 0.5
Node(b) time(1): 0.1, time(2): 0.8, time(3): 0.4
In the above case, I want to output node(a): 0.5 and node(b): 0.8.

Can you tell me how to write directly from TELEMAC and SISYPHE or extract from SLF file?

Regards.

Hello doggo3,

For TELEMAC-2D, what about MAXZ choice for VARIABLES FOR GRAPHIC PRINTOUTS?
I do not think such a choice is directly available for SISYPHE and bed evolution, but you can use one of the 4 additional variables A, G, L or O in the SISYPHE VARIABLES FOR GRAPHIC PRINTOUTS + implement what you want to write in one of these extra variables in the PREDES subroutine from SISYPHE sources directory + change the name in NOMVAR_SISYPHE.
Have a look at how it is done for MAXZ (maximum elevation) in TELEMAC-2D (subroutines PRERES_TELEMAC2D, NOMVAR_TELEMAC2D) or examples.

Anyway, I think several post-treatment tools can do the job. If you post your claim in the right category, you may get answers (I cannot use all of them).

Hope this helps,

Chi-Tuan

Thanks for the quick answer, Chi-Tuan.

"the right category" means "PRE/POST PROCESSORS", doesn't it? I didn't notice that.
I didn't even know about "MAXZ".

I searched again in the forum for "MAXZ" and found the same question. Furthermore, it had already been solved.

#23789
www.opentelemac.org/index.php/kunena/16-...ent-flood-simulation

In this case, I'm going to use SLF files and Bluekenue.
And I'll try ”MAXZ” next time.

Thank you,

Hello again,

Yes, the right category for post is the one you wrote, you can choose BK, Fudaa, Paraview depending on specific tool you want.

You should use MAXZ as you may use H, U or V as other VARIABLES FOR GRAPHIC PRINTOUT: it is exactly what you seem to want for maximum elevation, no need for additionnal operations with other tools, very convenient.

For bed evolution with SISYPHE, you seem to have found a good way to get it from BK.

Best regards,

Chi-Tuan

Another advantage of using MAXZ is that it gives you the maximum of free surface elevation for every time step, not only the ones stored in the RESULTS FILE at each GRAPHIC PRINTOUT PERIOD. If this last keyword is not equal to 1, you may not get the real maximum of elevations.

Same if you post-treat SISYPHE RESULTS FILE, you may miss the maximum of bed evolution if SISYPHE GRAPHIC PRINTOUT PERIOD is not equal to 1 if not implementing it.

Hope this helps,

Chi-Tuan

Hi Chi-tan.

I tried using 'maxz' and got better results than post-slf, as you said.
(Although some localized low values were observed.)
It's very easy.

Thank you.