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Hi all!
When I checked the user manual, I didn't seem to find any information about coupling of ocean current models. I would like to know if TELEMAC can coupling ocean current models similar to coupling TPXO tidal models? If there is no interface like TPXO, is there any other way to couple the ocean current model? I also tried to write USER_CONDI3D_UVW before, but it seemed too inefficient.
Looking forward to your reply!

Hello Xinjie,

The use of TPXO-like tidal solutions is to compute boundary conditions at open boundaries and also initial solutions due to tidal currents and tidal elevations.

Depending on what kind of input data you have and want to use them (only boundary conditions at every time step), if you can provide them in the same format, you could inspire from what is done for TPXO-like tidal solutions.

If you want to add permanent ocean currents models at every time step or a linear interpolation at every time step, you have to implement what you want in TELEMAC, it is not done in standard code to my knowledge.

FYI, USER_CONDI3D_UVW subroutine is to be used only in TELEMAC-3D for initial conditions, not for TELEMAC-2D (as you post your message in the TELEMAC-2D section) or for every time step different from the initial time step.

Hope this helps,

Chi-Tuan

Hi Chi-Tuan
Thanks for your reply, which gives me a new direction of study because it seems to be feasible.
Best regard
Xinjie

Hi all!

When I really started working on it, I found it was beyond my abilities, first because I wasn't sure what format the ocean current model should be stored in to be readable by TELEMAC (TPXO data seems to be a proprietary file type). Second, do I need to create an interface such as a keyword in the dico file to be able to read my current model (if I have)?

In other words, if I can get velocity data for an area over a long period of time, how do I process that into a current forecast and how do I get it read by TELEMAC?

Sincerely hope someone can give me some help.

Hello Xinjie,

You can manage binary input files or ASCII input files with free format with keywords BINARY DATA FILE 1, BINARY DATA FILE 2, FORMATTED DATA FILE 1 or FORMATTED DATA FILE 2. Have a look at the TELEMAC-2D user manuals. You then need to know how to read them and implement the reading in dedicated subroutine(s).

Keywords exist to facilitate the use of existing features without having to implement Fortran lines. You do not need to create them if you implement your own feature (at least to start).

What you can do is to implement exactly what you want (as TELEMAC is open source you can implement everything you want, provided that you know Fortran).

Hope this helps,

Chi-Tuan

Hi Chi-Tuan
Thank you for your reply, it was very enlightening.