open TELEMAC-MASCARET The mathematically superior suite of solvers

Hi. I'm newbie for hydrodynamic modelling and the TELEMAC system.

When I first tried to run my model, it seemed like running, but found out to be meaningless. Message such as below shows up all the way.


================================================================================

ITERATION 100 TIME: 16 MN 40.0000 S ( 1000.0000 S)
LIQUID BOUNDARY: SL(1) = 97.609999999999999
LIQUID BOUNDARY: Q(2) = 3.2272499999999997
LIQUID BOUNDARY: Q(2) = 3.2272222222222222

---

ADVECTION STEP

---

DIFFUSION-PROPAGATION STEP
GRACJG (BIEF) : EXCEEDING MAXIMUM ITERATIONS: 100 RELATIVE PRECISION:
NaN

---

K-EPSILON MODEL
GRACJG (BIEF) : EXCEEDING MAXIMUM ITERATIONS: 50 RELATIVE PRECISION:
NaN
GRACJG (BIEF) : EXCEEDING MAXIMUM ITERATIONS: 50 RELATIVE PRECISION:
NaN

---

BALANCE OF WATER VOLUME
VOLUME IN THE DOMAIN : NaN M3
FLUX BOUNDARY 1: NaN M3/S ( >0 : ENTERING <0 : EXITING )
FLUX BOUNDARY 2: NaN M3/S ( >0 : ENTERING <0 : EXITING )
ABSOLUTE ERROR IN VOLUME AT T = 1000. S: NaN

---

FINAL BALANCE OF WATER VOLUME

RELATIVE ERROR CUMULATED ON VOLUME: NaN

INITIAL VOLUME : 634334.8 M3
FINAL VOLUME : NaN M3
TOTAL VOLUME LOST : NaN M3

END OF TIME LOOP

CORRECT END OF RUN

ELAPSE TIME :
6 SECONDS



I'm trying to build a model for the creek flowing into reservoir.
Boundary 1 is for downstream and time-dependent surface elevation(SL) is given. It is impacted by water level of reservoir, so almost constant. Time-dependent flowrate(Q) is given for boundary 2.

I suppose initial condition or boundary condition might be problematic. However I just can't find what the problem is.

Really need some help.
Thanks for your advice in advance.

Hello

NANs here means probably that your time step is too high. Please reduce it to 1s and see what Telemac says to you.
Another point, remove the keyword 'Steering file= ...' this could be a source of trouble for Telemac.

I hope that this helps
Riadh