open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello everyone,
I´m investigating a decaying oscillation in an artificial basin that consists of rectangular channels. I´m using the law of Strickler for bottom friction and the log law of the wall as the law of friction on the lateral boundaries. Can anyone tell me how to change the friction coefficient for the log law of the wall used for the computation of friction on lateral boundaries? The Reference Manual states that the “ROUGHNESS COEFFICIENT OF BOUNDARIES” depends on the regime selected by “LAW OF BOTTOM FRICTION”...
Thanks in advance
MK

I´ve now done simulations with different ROUGHNESS COEFFICIENT OF BOUNDARIES, because i saw a reply to another topic saying that the ROUGHNESS COEFFICIENT OF BOUNDARIES in fact refers to the LAW OF FRICTION ON LATERAL BOUNDARIES (in contrast to what is stated in the reference manual). The coefficients tested were 0.0001;0.001;0.01 and 55. There is no difference in the results...