New boundary conditions

    The width of the inlet is equal to the width of the minor bed :
 
 

New results

    Here correction on inlet boundary can be noticed, in fact there still flow in the inlet, but this is not the steady state :

new results after after 650s with a time step of 4 sec with is obviously too large :

above left : velocity vector at 650 sec
above right : water height at 50 sec
other : water height at 50 sec and 650 sec