Local Scouring around a Circular Pier in Open Channel
نویسندگان
چکیده
Local scour around a cylindrical pier in a channel with an erodible bed or natural bed is a common problems in bridge or pile supported structure. The highly unsteady complex flow field around a circular pier produces scour hole mainly for the presence of vortices. The main mechanism that drives the formation and evolution of the scour hole around bridge pier is horse shoe vortex motion. In the present study the depth of scour hole is measured experimentally around a cylindrical pier due to different depth of flow. An attempt has been made to find the relationship between Froude number and depth of scour hole in the laboratory open channel. The equilibrium scour depth is found experimentally for different Froude number around circular cylinder placed on sand bed. Keywords—Scouring hole, Froude number, Equilibrium scour depth, Vortex.
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