open TELEMAC-MASCARET The mathematically superior suite of solvers

Is there a good reference somewhere describing the different formulations for the friction on lateral boundaries? I found the user manual not very clear about it, and maybe not consistent with the reference manual.

In particular, I would like to use the linear model. Can I find the equations somewhere? Which keywords must be used? What are typical values for the coefficient?

Thank you so much for your help

Hello Olivier,

I think that the help (AIDE) of the keyword LAW OF FRICTION ON LATERAL BOUNDARIES in the TELEMAC-2D dictionary (thus TELEMAC-2D reference file) is wrong for item #1, but the choice 1 has the good name: Haaland, the same as for the bottom.

You can get the exact formula implemented in the FRICTION_CALC subroutine (from TELEMAC2D subroutine, the FRICTION_CHOICE subroutine is called then FRICTION_UNIF or FRICTION_ZONES, then FRICTION_CALC).

Hope this helps,

Chi-Tuan