Print Email Facebook Twitter Flow Equations for River Bends Derived by Tensor Calculus and Flow Acceleration in Depth-Averaged Models Title Flow Equations for River Bends Derived by Tensor Calculus and Flow Acceleration in Depth-Averaged Models Author Talmon, A.M. Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Date 1992-01-01 Abstract Flow equations for application in river bends are derived. Coordinate transformations are achieved by tensor calculus. The momentum equations are formulated in a cylindrical coordinate system and in a cylindrical bed-following coordinate system. The depth-averaged momentum equations in a cylindrical bed-following coordinate system are derived. The resulting equations agree with the formulations known from literature. In depth-averaged flow models the flow is mostly modelled by similarity velocity profiles that are based on the assumption of local equilibrium. In regions of gently varying bed topography the effect of flow accelerations, or decelerations, on the velocity profiles and bed shear-stresses is studied. The conclusion is that the bed shear-stresses are the most affected. The effect on the flow velocities is small. Subject flow equationsriver bendstensor calculustensor analysisflow accelerationdepth-averaged modelbed topographyvelocity profilesbed shear-stresses To reference this document use: http://resolver.tudelft.nl/uuid:f55b79d6-d51d-42bf-bc49-71c99fc9d72c Publisher TU Delft, Department of Hydraulic Engineering Source Report no. 2-92 Part of collection Institutional Repository Document type report Rights (c) 1992 TU Delft, Department of Hydraulic Engineering /islandora/object/uuid:f55b79d6-d51d-42bf-bc49-71c99fc9d72c/datastream/OBJ/view