open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello, I would like to ask some questions about Wind influence

First，I had a tide model, and would like to simulate it with the wind data. untill now i checked some parameters related.

1. Wind variable in time, constant in space, OPTION FOR WIND = 2.

2. I added the fo1_wind file to FORMATTED DATA FILE 1, formate like in the "wind" example.(TIME FUAIR FVAIR)

3. For COEFFICIENT OF WIND INFLUENC, I checked the previous posts. (Thanks to Chi-Tuan and Jonathan for their guidance.) I added the fortran file force.f to define COEFFICIENT OF WIND INFLUENC and some related force.

4. I also checked the TIME STEP for the simulation and the wind data are based every 600s. (Thanks to Laurent's post reminding it before)

but the process of simulation was not i expect, the wind data not used to simulate in telemac, i dont know how to fix it. so i would like attach my steering file, fo1_wind file, and force.f file.

thank you for helping
Yang

here is the wind data like

TIME FUAIR FVAIR
s m/s m/s
0 1.8888 1.0643
600 1.7399 1.4704
1200 1.1531 1.1941
1800 1.7215 1.2234
2400 1.0666 1.1846
3000 0.5068 1.1601
3600 0.8466 0.9142
4200 0.9657 0.8248
4800 0.5473 0.9519
5400 0.6987 0.7363

.........

2591400 0.9423 0.1492
2592000 0.9135 -0.2533
2592600 0.8097 -0.0737

seems the fo1_wind file can not be attached.

the process of simulation are like below:

---

ITERATION 0 TIME: 0.0000 S
TELEMAC2D INITIALIZED
PROSOU : IN CARTESIAN COORDINATES, THE CORIOLIS
PARAMETER IS READ IN THE STEERING FILE
IT IS THE KEY WORD 'CORIOLIS
COEFFICIENT', IT IS UNIFORM IN SPACE
GRACJG (BIEF) : EXCEEDING MAXIMUM ITERATIONS: 100 RELATIVE PRECISION: NaN
GRACJG (BIEF) : EXCEEDING MAXIMUM ITERATIONS: 100 RELATIVE PRECISION: NaN
GRACJG (BIEF) : EXCEEDING MAXIMUM ITERATIONS: 100 RELATIVE PRECISION: NaN

.......Omitted

ITERATION 1440 TIME: 1 D 0 H 0 MN 0.0000 S ( 86400.0000 S)

---

DIFFUSION-PROPAGATION STEP
CVTRVF_POS_2 (SCHEME 13 OR 14): 1 ITERATIONS
GRACJG (BIEF) : EXCEEDING MAXIMUM ITERATIONS: 100 RELATIVE PRECISION: NaN
POSITIVE DEPTHS OBTAINED IN 1 ITERATIONS

---

BALANCE OF WATER VOLUME
VOLUME IN THE DOMAIN : 0.4300046E+09 M3
FLUX BOUNDARY 1: NaN M3/S ( >0 : ENTERING <0 : EXITING )
RELATIVE ERROR IN VOLUME AT T = 0.8640E+05 S : NaN
MAXIMUM COURANT NUMBER: 0.000000
TIME-STEP : 60.00000
GRACJG (BIEF) : EXCEEDING MAXIMUM ITERATIONS: 100 RELATIVE PRECISION: NaN
.....
END

Did you try to reduce the time step as you're always in max iteration

i just tried that

1- to increase the maximum number of iterations for the SOLVER (100 to 50)
2- decrease the TIME STEP (60s to 10s)

seems not working...what i did is correct?

if you change the maximum number of iterations for the solver from 100 to 50, this mean you decrease it!

try to increase it to 500 and try also to decrease the time step to 1s

the main goal is to see if it's running or not.

no, still not working, what part should i re-check for it?
when i just run the condition of the TPXO tide, nothing happen.

Hi,

In your steering file, can you try to replace:
FORMATTED DATA FILE 1 ='fo1_wind'
by
ASCII ATMOSPHERIC DATA FILE ='fo1_wind'

Please, avoid multiple posting.

Regards,
Laurent

its works now, thank you Laurent
i thought that in vision v8p0 ASCII ATMOSPHERIC DATA FILE is replaced by FORMATTED DATA FILE 1 in Fuadaapre,now i knew that it just a part of tools to change those parameters, i should learn how to write directly in steering and build my fortran file.

By the way, I should read the forum rules again. I didn't multiple post intentionally. I didn't know that the reply also send to you, I would like to communicate with people who has the same goal in project. So I apologize again, sorry for disturb you by extra mail with same question.

And thanks to you again.
All regards
Yang

Hi， I have the same queation as you,how to solve it?