open TELEMAC-MASCARET The mathematically superior suite of solvers

Dear all,

I am investigating the breaking wave coefficient "beta" in order to evaluate the impacts of wave breaking.
I used tomawac coupled with telemac 2d (v7p0) and Battjes and Jansen depth induced breaking dissipation.
In the operating and users manuals, I didn't found the formula attached with beta.
Do you have more informations about this breaking wave coefficient ? I obtained negatives values, roughly between 0 and -0.25. Are these values in the usual range ?

Thank you for your help!

Hello

basically, you have Qbr= Beta F (eq 4.56) where F is the energy density (all you have before the F is the definition of breaking wave coefficient.

And Qbr is the part of your second member in the equation 4.27

If Beta is negative it means your wave is loosing energy which is not too bad for a breaking dissipation. 0 you don't have dissipation.

The numbers of equations are the ones in the last version (8.3) (i don't have the reference for 7.0 documentation)

hope it helps