open TELEMAC-MASCARET The mathematically superior suite of solvers

Hi people.
I need help of us.
I am using the TELEMAC 3D and the mesh transformation used is sigma=2.
The code is following:
DO IPLAN = 1,NPLAN
TRANSF_PLANE%I(IPLAN)=2
ENDDO

ZSTAR%R(1) = 0.00D0
ZSTAR%R(2) = 0.15D0
ZSTAR%R(3) = 0.25D0
ZSTAR%R(4) = 0.35D0
ZSTAR%R(5) = 0.45D0
ZSTAR%R(6) = 0.55D0
ZSTAR%R(7) = 0.65D0
ZSTAR%R(8) = 0.75D0
ZSTAR%R(9) = 0.85D0
ZSTAR%R(NPLAN) = 1.00D0

But the salinity stratification is not apparent in my results. The bottom salinity is the very same the surface.
Thus the ZPLANE could be more suitable for to show the stratification when it occurs.

With relation for this I have a doubt, how I should insert the fixed level?


Regards

Hello,

You can read the TELEMAC-3D user manual available in $HOMETEL/documentation/telemac3d/user
or on the website:
wiki.opentelemac.org/doku.php?id=documentation_latest

Look for telemac3d_user_v8p2.pdf or link telemac3d_user_v8p2

If you know where you stratification should be located, refine your vertical mesh around this level.

Hope this helps,

Chi-Tuan

Thank your reply Chi-tuan.

I read the TELEMAC Manual, especially in this part:

· fixed levels at a given altitude (correspond to value 3 of the TRANSF_PLANE variable, the altitude is specified by the ZPLANE variable)


and the correspondent code

specifying the level altitude through the array ZPLANE for levels of type 3.

TRANSF_PLANE%I(6)=3
ZPLANE%R(6)=0.D0

The doubt is which elevated could be to specify? Because in this example it have only one layer in zplane, right?

The numbers should be negative as the example showed in the TELEMAC routine?

OTHER EXAMPLES:
C
C EXAMPLE 1: ALL PLANES WITH PRESCRIBED ELEVATION
C
C DO IPLAN = 1,NPLAN
C TRANSF_PLANE%I(IPLAN)=3
C ENDDO
C ZPLANE%R(2)=-7.D0
C ZPLANE%R(3)=-4.D0
C ...
C ZPLANE%R(NPLAN-1)=-0.05D0

Thanks for all

Hello,

You can prescribe the elevation of the number of planes you want: 0, 1, more up to NPLAN-2 planes (the 1st one is for the bottom and the last one for the free surface) as long as they are declared with an inscreasing order. The other(s) can be defined as sigma.

The elevation of plane(s) is to be chosen with a relevant value of your fluid domain (where you will have water and salt). Depending on the reference level with respect to which the bottom elevation is defined (e.g. Chart Datum, Mean Sea Level), the value can be negative or not.

If you need more examples to understand, have a look at the TELEMAC-3D validation document and the associated examples in the validation folder, in particular the user_mesh_transf subroutines in the subfolders user_fortran when available (which means a mesh transformation equal to 2 or 3 is defined).

Hope this helps,

Chi-Tuan