Print Email Facebook Twitter Local Scour: Flow model with prescribed eddy viscosity Title Local Scour: Flow model with prescribed eddy viscosity Author Hoffmans, G.J.C.M. Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Date 1988-01-01 Abstract A two dimensional mathematical model DUCT, which is based on a parabolic boundary layer technique, using finite elements, is proposed to predict the flow and turbulence field in complicated geometrical conditions, where recirculating flow may occur. Numerical results of the DUCT-model are compared with k-eps-predictions as well as laboratory experiments concerning the flow in a number of configurations. In the case of a steep lee-side the location of the separation point is not well located, because the normal stresses in the equation of motion are neglected. Generally the velocities in the deceleration and acceleration zone are satisfactory. An advantage of the application of the DUCT-model compared with the sophisticated k-E-model is the relatively low computation time used to solve the set of equations. Subject local scourflow modelDUCTeddy viscositymorphology To reference this document use: http://resolver.tudelft.nl/uuid:fd9997ac-14ec-4cc0-9257-52d5378c6b0d Publisher TU Delft, Department of Hydraulic Engineering Source Report no. 11-88 Volume 1: Text Part of collection Institutional Repository Document type report Rights (c) 1988 TU Delft, Department of Hydraulic Engineering Files PDF Hoffmans1988c.pdf 6.52 MB Close viewer /islandora/object/uuid:fd9997ac-14ec-4cc0-9257-52d5378c6b0d/datastream/OBJ/view