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Dear all,
I am a beginner in telemac3d and done some simulations using example files. I am afraid that how silly would be my question. I have the doubt regarding adding the tidal data in the telemac3d simulation. I have a .dat file which have the liquids boundary conditions with tidal data. But during simulation it is showing CHOOSE THE TIDAL DATA BASE
AMONG THE POSSIBLE CHOICES:
-1: JMJ,
-2: TPXO,
-3: LEGOS-NEA.
should I include tpxo file instead of .dat file ?? I have done the same simulation in 2d using tpxo file.

thanks and regards
sidharth
sidharth

Hello,

What is the format of your tidal data file? Can you upload your file or a sample with a few lines if too big? From source did you build this file?

If you have already done the same simulation in 2D, you should do the same in 3D with the same options for tidal keywords.

Hope this helps,

Chi-Tuan

HI, Chi-Tuan
thanks a lot for your reply. I am pasting the files few lines which is in the format of .dat file. along with the file I am using flow rate data and there are mainly two inflow and one open boundary is there.
T SL(1) Q(2) Q(3)
s m m3/s m3/s
0 0.137318 25 0.5
900 0.167318 25 0.5
1800 0.197318 25 0.5
2700 0.227318 25 0.5
3600 0.257318 25 0.5
4500 0.277318 25 0.5
5400 0.297318 25 0.5
this is the dat file that I am using.in telemac2d I have used only htpxo file only and it worked.

If you understand, you have 3 liquid boundaries:
- the 1st one where with prescribed elevation from tide (in your ASCII file),
- the last 2 ones with prescrided flowrates.

In 3D, you use a LIQUID BOUNDARIES FILE, do not you?

My question is: which tidal level do you really want to prescribe, the one from this LIQUID BOUNDARIES FILE or the one from TPXO-type tidal solutions?

In the first case, you do not need to fill in the keyword called OPTION FOR TIDAL BOUNDARY CONDITIONS and then, you will not occur the error message.
In the second case, this keyword has to be set with relevant values (read the TELEMAC-3D user and reference manuals), and then you have to also fill in the keyword TIDAL DATA BASE.

If you use LIQUID BOUNDARIES FILE, OPTION FOR TIDAL BOUNDARY CONDITIONS and TIDAL DATA BASE with no default values in 2D, the boundary conditions computed for the 1st boundary for TPXO solution overwrite the one in LIQUID BOUNDARIES FILE.

Hope this helps,

Chi-Tuan

thanks for your response and help Chi-Tuan. I tried and made some changes according to your suggestion and it worked pretty well.

thanks and regards
sidharth