open TELEMAC-MASCARET The mathematically superior suite of solvers

Please note that a difference between versions 6.0 and 6.1 may trigger differences :

The keyword :

IMPLICITATION FOR VELOCITY (IMPLICITATION POUR LA VITESSE)

was forced to 1 with the wave equation option in version 6.0

and this constraint has now been relaxed.

A visible effect is that when you ask a prescribed discharge, e.g. 500 m3/s, you will see in your listing that your discharge is only close to 500 m3/s, for example 499.67 m3/s, and may fluctuate with time.

Actually velocities at time t(n+1) are computed to give the right discharge, but the observed discharge includes fluxes due to velocities at time t(n).

To get results as in version 6.0, you must then add the following line in your parameter file :

IMPLICITATION FOR VELOCITY : 1.


I hope this will clear up questions,

Jean-Michel Hervouet

Note: this has also been added to the article explaining the new features of TELEMAC-2D v6p1.