Author(s): Reda Diab; Oscar Link; Ulrich Zanke
Linked Author(s): Oscar Link
Keywords: No Keywords
Abstract: The turbulent flow field around a square pier (side facing the approaching flow) in a uniform gravel bed under the clear water scour condition is investigated experimentally. Experiments were conducted in a large flume with 37 m length, 2 m width and 1 m depth at the laboratory of the Institute for Hydraulic and Water Resources Engineering of the Darmstadt University of Technology, Germany. Point velocities around a square cylinder were measured over a plane sediment bed and in an equilibrium scour hole using the acoustic doppler velocimeter ADV. Measurements were carried out at the pier front, sides and wake in different azimuthal half-planes with = 0,45,90,135, and 180o. Results show the spatial distribution of time-averaged velocity components. The results are useful for validation of CFD models that can be used to simulate scouring around bridge elements improving their design.
Year: 2009