Boundary shear stress distributions in smooth rectangular open channel flows

摘要

This paper presents an analytical method for the computation ofboundary shear stress distributions acting on the flow perimeter ofprismatic open chan- nels. The approach is based on the premise thatthe surplus energy of any arbitrary unit volume of fluid in a three-dimensional flow channel will be trans- ported towards and dissipatedat a unit area on the wetted perimeter. This leads to a concept whichstates that the direc- tion of energy transportation will define aminimum relative distance, φ, between the source of energy in theflow field and the boundary.