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Hello modelers, I am having difficulties with a nested model. I have a 1D2D model and then in the channel of my watercourse I have a nested 2D domain. The aim is assessing scour in the banks therefore velocity is the most important factor here. I have the same roughness all around in the channel therefore, I would expect higher velocities where the LiDAR points out at deeper areas and also at the outside bank of the channel curves. However, I am not observing that and I am trying to think out of the box to find an explanation. I would say apart from roughness, flow (which should be fairly constant as there is no much flooding) and DTM profile I have not other variables which would affect to my results. The model is unstable after the peak but looking at the peak and before, I do not see what I would expect (a "similar pattern of the DTM for the velocities according to depth"). Maybe I am missing something and any help will be very appreciate it. Thanks, Monica