Morphoevolution module

[jifoyi]

Hi, I am a little confused with the morphevolution module. I
downloaded it from https://repos.deltares.nl/repos/XBeach/trunk/.

The question are described detailed as follow:
(line:line number in source codes, source code: the detail source code
from the trunk which I downloaded)
Iine source code

224 ! suspended load
225 Sus=par%sus*(cu*ureps*hu-Dc*hu*dcsdx-par
%facsl*cu*vmagu*hu*dzbdx)*wetu !No bed slope term in suspended
transport?
226 ! bed load
227 Sub=par%bed*(cub*urepb*hu-par
%facsl*cub*vmagu*hu*dzbdx)*wetu


303 ! Suspended load
304 Svs=par%sus*(cv*vreps*hv-Dc*hv*dcsdy)*wetv
305 ! Bed load
306 Svb=par%bed*(cvb*vrepb*hv-par%facsl*cvb*vmagv*hv*dzbdy)*wetv


320 Svb = 0.d0
321 Svb = pbbedv*Svb

1.As we can see from above, the suspended sediment is calculated with
bed slope term in U direction while this term is not included in V
direction. Why??? Should we treat U,V direction's suspended sediments
transport differently??


2. In line 320, the Svb is setted to zero, that means we exclude bed
sediment transport in V direction?? Is this has any physical
meanings??

Maybe I misunderstand the code or there is some special physical links
I have still not understood well. Please help me.

Regards