open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello everybody
Where is the thermal diffusion coefficient in telemac 3D?
I tried in CVBD3D.f and the diffusion matrix without results.
It is possible to change it in some specific zones in the mesh?
I have other questions in some cases the relative humidity is taking into account, so in my metheo data I have:

T_air Pvap Wind wind dir Hrel Nebulo Ray3 P_atm rain
degC hPa m/s degree % octa W/m2 mbar mm

And run, but I am not sure if correct like that.
Another question if I have ATMOSPHERE-WATER EXCHANGE MODEL= 1
It is necessary to add:
Air pressure= yes
RAIN AND EVAPORATION =YES

Thank you very much

Hello Juli,

Can you clarify your first question please?
The coefficient for diffusion of tracers (horizontal and vertical) are stored in the DNUTAH and DNUTAV arrays, in particular if temperature is taken into account as a tracer.
You can implement a spatialisation of these arrays in a Fortran file if you want to change it depending on the location.

Please use the latest release v8p2 and read the WAQTEL user manual chapter 3 if you want to deal with relative humidity.

Depending on if you want to take into account the the atmospheric pression, rain or evaporation when solving the Navier-Stokes equation, the answer for your last question is yes.

The option ATMOSPHERE-WATER EXCHANGE MODEL= 1 does not use atmospheric pressure or rain or evaporation input data.

Hope this helps,

Chi-Tuan

Hello Chi-Tuan
Thank you very much
very clear!!!

Dear all
I was trying to find example to run waqtel module decoupled I mean using this option:

TITRE = 'WAQ THERMIC: REJET CASE'

PERIODE POUR LES SORTIES QUALITE D'EAU =100
/WATER QUALITY PRINTOUT PERIOD=100


/WATER QUALITY PRINTOUT PERIOD=100

VARIABLES POUR LES SORTIES QE =100
/VARIABLES FOR WAQ PRINTOUTS =100

VARIABLES QE A IMPRIMER= TA1
WAQ VARIABLES TO BE PRINTED = TA1

FICHIER DE GEOMETRIE = rejet.slf

FICHIER DES CONDITIONS AUX LIMITES = FOND_BC_rejet.cli

FICHIER HYDRODYNAMIQUE = 'Results/res3D_rejet.slf'
/HYDRODYNAMIC FILE = 'Results/res3D_rejet.slf'

VISCOSITE CINEMATIQUE EAU = 1.E-6
/KINEMATIC WATER VISCOSITY = 1.E-6

DISPERSION LONGITUDINALE = 1.E-2
/DISPERSION ALONG THE FLOW = 1.E-2

DISPERSION TRANSVERSALE = 1.E-2
/DISPERSION ACROSS THE FLOW = 1.E-2

BILAN DE MASSE = OUI
/MASS-BALANCE = OUI

But does not work.
or maybe this option even not exist and is possible only in Sisyphe?
I need some help and I want to know if with this option Can I gain time?

CAS file:



Thank you very much

Hello Juli,

No example to find as this is not available.

Anyway, some keywords you are using are read but not used as indicated in the WAQTEL dictionary or the WAQTEL reference file (read the help or AIDE), e.g.:
WATER QUALITY PRINTOUT PERIOD=100
VARIABLES FOR WAQ PRINTOUTS =100
WAQ VARIABLES TO BE PRINTED = TA1
HYDRODYNAMIC FILE = 'Results/res3D_rejet.slf'
KINEMATIC WATER VISCOSITY = 1.E-6
DISPERSION ALONG THE FLOW = 1.E-2
DISPERSION ACROSS THE FLOW = 1.E-2
MASS-BALANCE = OUI

No need to put them in your WAQTEL steering file

Hope this helps,

Chi-Tuan

Dear all.
My phd work consists in run Telemac 3D thermal simulation in a big domain.
After several test cases, I ran the real case, the hydrodynamics is working, the thermal process worked, but when I tried to run temperature as an active tracer I got this error.
I will appreciate any suggestion, I thought that was a problem with the number of partitions and does not work either.
thx

Which error? :)

Sorry,I don't know why its not in attach

Hello Juli,

Using the search function of this forum should have given you some ideas:
try to decrease the time step.

Hope this helps,

Chi-Tuan

Finally, I fixed the problem, but my results have no sense.
I have a uniform profile temperature using the option active tracer o Boussinesq approximation.
Any clue about it?
Case 1 and 2 No active tracer.
Case 3 and 4 with active tracer