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TOPIC: telemac3D_No Drogue file output (v8p2)

telemac3D_No Drogue file output (v8p2) 3 years 9 months ago #37829

JulienM
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Posts: 6

Hi,
I have transferred a study from a colleague that uses v8p1 and noticed quite a few differences with what is tolerated in the last version. I am very new to Telemac and tried the best I could to make it work. However I am fairly sure something is not right.
I am tailing the log and I receive a lot of ERROR ON THE MASS DURING THIS TIME STEP

--------------------------------------------------------------------------------
                DRIFT OF DROGUE(S)
--------------------------------------------------------------------------------
                MASS BALANCE

  WATER
MASS AT THE PREVIOUS TIME STEP                :    0.2713267E+13
MASS AT THE PRESENT TIME STEP                 :    0.2713467E+13
MASS LEAVING THE DOMAIN DURING THIS TIME STEP :   -0.2005236E+09
ERROR ON THE MASS DURING THIS TIME STEP       :   -0.9264648E-03
  BOUNDARY FLUXES FOR WATER IN M3/S ( >0 : ENTERING )
FLUX BOUNDARY      1                          :     1397874.
FLUX BOUNDARY      2                          :     10.71300
FLUX BOUNDARY      3                          :     6.788000
FLUX BOUNDARY      4                          :     7.641000
FLUX BOUNDARY      5                          :     15.94300
FLUX BOUNDARY      6                          :     9.689000
FLUX BOUNDARY      7                          :     55.00000
FLUX BOUNDARY      8                          :     1.789000
FLUX BOUNDARY      9                          :     1944078.

  TRACER  1: SALINITY        , UNIT :                 * M3)

ADVECTIVE FLUX THROUGH BOUNDARIES OR SOURCES  :   -0.1156476E+09
DIFFUSIVE FLUX THROUGH THE BOUNDARIES         :    -0.000000
MASS AT THE PREVIOUS TIME STEP                :    0.9372736E+14
MASS AT THE PRESENT TIME STEP                 :    0.9373429E+14
MASS EXITING (BOUNDARIES OR SOURCE)           :   -0.6938858E+10
ERROR ON THE MASS DURING THIS TIME STEP       :     827975.8

  TRACER  2: TEMPERATURE     , UNIT :                 * M3)

ADVECTIVE FLUX THROUGH BOUNDARIES OR SOURCES  :   -0.2660302E+08
DIFFUSIVE FLUX THROUGH THE BOUNDARIES         :    -0.000000
MASS AT THE PREVIOUS TIME STEP                :    0.2162153E+14
MASS AT THE PRESENT TIME STEP                 :    0.2162313E+14
MASS EXITING (BOUNDARIES OR SOURCE)           :   -0.1596181E+10
ERROR ON THE MASS DURING THIS TIME STEP       :    -114216.2
  BOUNDARY FLUXES FOR TRACER  1 IN                 * M3/S) ( >0 : ENTERING )
FLUX BOUNDARY      1                          :    0.4837205E+08
FLUX BOUNDARY      2                          :     214.2600
FLUX BOUNDARY      3                          :     135.7600
FLUX BOUNDARY      4                          :     152.8200
FLUX BOUNDARY      5                          :     318.8600
FLUX BOUNDARY      6                          :     193.7800
FLUX BOUNDARY      7                          :     1650.000
FLUX BOUNDARY      8                          :     35.78000
FLUX BOUNDARY      9                          :    0.6727288E+08
  BOUNDARY FLUXES FOR TRACER  2 IN                 * M3/S) ( >0 : ENTERING )
FLUX BOUNDARY      1                          :    0.1112708E+08
FLUX BOUNDARY      2                          :     107.1300
FLUX BOUNDARY      3                          :     67.88000
FLUX BOUNDARY      4                          :     76.41000
FLUX BOUNDARY      5                          :     159.4300
FLUX BOUNDARY      6                          :     96.89000
FLUX BOUNDARY      7                          :     550.0000
FLUX BOUNDARY      8                          :     17.89000
FLUX BOUNDARY      9                          :    0.1547486E+08

I also don't see the ASCII being written anywhere, I am assuming that there is an issue with the configuration. I attach the cas and the configuration from user_fortran
Thanks in advance

Attachments:

t3d_tide-E..._gen.cas (9KB)
Config_202..._15-48.f (29KB)

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telemac3D_No Drogue file output (v8p2) 3 years 8 months ago #37887

pham
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Administrator
Posts: 1559
Thank you received: 602

Hello Julien,

The sentence written in the log file "ERROR ON THE MASS DURING THIS TIME STEP" is not an error from you, but a computation of the error when TELEMAC computes the mass balance between 2 time steps.

Have you tried to run the particles TELEMAC-3D example and if yes, do you have the writing of the ASCII DROGUES FILE?

If not already done, I would try to start with less drogues and less time steps to see if it already works for you, e.g. only one call to CALL ADD_PARTICLE.
I assume the coordinates you wrote are inside the extent of your model.

Hope this helps,

Chi-Tuan

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The following user(s) said Thank You: JulienM

telemac3D_No Drogue file output (v8p2) 3 years 8 months ago #37957

JulienM OFFLINE Fresh Boarder Posts: 6	Since then I realised that I could tail the temporary drogue file and that it was actually working. Thanks for your answer
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