Print Email Facebook Twitter Reproduction of velocity and shear stress profiles in estuaries by some one-dimensional mathematical models (interim report) Title Reproduction of velocity and shear stress profiles in estuaries by some one-dimensional mathematical models (interim report) Author Booij, R. Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Date 1981-01-01 Abstract In this investigation the reproduction of tidal flow in channels of estuaries by means of several simple mathematical models is considered. Attention is mainly paid to velocity and shear stress profiles and to hysteresis effects of the shear stresses with respect to the surface velocity. Only one-dimensional models obtained by neglect of convective derivatives of the longitudinal velocity are considered. The models are of the eddy viscosity type, where the eddy viscosity is a prescribed function of depth and flow velocity or is dependent on the turbulence energy. Until now the prescribed eddy viscosity got most attention, but it is shown that eddy viscosities which are dependent on the turbulence energy, will not give very different results. Models with an eddy viscosity being a quadratic function of the depth and proportional to a varying velocity (e.g. the depth-averaged velocity) reproduce the velocity and the shear stress profiles in estuaries quite well. The hysteresis effect of the shear stresses, however, is much smaller than found in the few prototype measurements. Subject shear stresseddy viscosityturbulent energy To reference this document use: http://resolver.tudelft.nl/uuid:cbe6c320-da2e-4ed5-aa96-fe34a0091ae6 Publisher TU Delft, Department of Hydraulic Engineering Source Report 2-81 Part of collection Institutional Repository Document type report Rights (c) TU Delft, Department of Hydraulic Engineering Files PDF Booij1981.pdf 12.41 MB Close viewer /islandora/object/uuid:cbe6c320-da2e-4ed5-aa96-fe34a0091ae6/datastream/OBJ/view