Scour in front of vertical breakwater by irregular waves

The scour in front of vertical breakwater under the action of irregular waves was studied by the method of combined theoretical and experimental work. Basic conclusions of this study can be given as follows; (I)The maximum depth of scouring trough can be detemined by Eq.(6),when the bottom surface is horizontal and the foundation of breakwater is under the cover of the bottom surface. (2) In case h_c/h<0.4, the effect of h_c on the scouring patterns is not obvious. (3) The effect of the slope of the bottom surface on the scouring patterns is obvious. (4) As for the depths of scouring troughs, the more far from the breakwater, the more small.