open TELEMAC-MASCARET The mathematically superior suite of solvers

Dear all,
I'm user Telemac2D and to couplage with Tomawac for wave simulation. I would like to simulate a porosity wall in my domain at a coastal zone. I has used Sub. DRAFOR.F and CORPOR.F of Telemac2D to define the caracteritics of wall for point of view of hydrodynamic. My question is how I can modelise the effect of this porosity wall in Tomawac? (What Sub.?). Thank you very much in advance for any suggestion.
Regards
Thong NGUYEN
HCMUT-VN