2000 Volume 44 Pages 533-538
In the design of bank protection and calculation of flood inundation, it is important to clarify the resistance of large roughness and the structure of flow in the shallow water flow. We have developeda two-dimensionanlu mericalm odel that considerst he shape and arrangement of large roughness. In this paper, measured hydrodynamic forces acting on submersible large roughness and averaged velocity distribution around roughness element are presented. The resistance of shallow water flow over submerged large roughness is examined using the equivalent roughness ks. Additionallyt, his paper compares one-dimensionanl numerical simulation using the equivalent roughness ks with two-dimensional numerical simulation.
