Print Email Facebook Twitter Experiments and computations on unsteady separating flow in an expanding flume Title Experiments and computations on unsteady separating flow in an expanding flume Author Stelling, G.S. Wang, L.X. Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Date 1984-01-01 Abstract An unsteady, separating flow with a free surface was investigated with a physical model and a numerical model. To simulate tidal flow, the prescribed flow rate at the inflow boundary was a half-period sine function of time. Measurements of velocities and wave heights were conducted by using LDV and a wave-height meter in a straight open channel with a sudden widening and a non-reflective outlet. Distributions of depth-averaged velocities at different times were obtained. Numerical simulation of this flow was carried out using a computer programme of second-order accuracy. The development of the recirculation region in course of time was well simulated, and the observed splitting of the main eddy in a later phase of the experiment and the secondary eddy in the concave corner were reproduced. The computational results are markedly influenced by the boundary conditions at closed boundaries and the eddy viscosity applied. Subject experimentsunsteady flowseparating flownumerical modelphysical modeltidal flowboundary conditions To reference this document use: http://resolver.tudelft.nl/uuid:e062b70f-50d3-45dd-b5c8-4a54c778eb70 Publisher TU Delft, Department of Hydraulic Engineering Source Report no. 2-84 Part of collection Institutional Repository Document type report Rights (c) 1984 TU Delft, Department of Hydraulic Engineering Files PDF Stelling_Wang1984.pdf 12.37 MB Close viewer /islandora/object/uuid:e062b70f-50d3-45dd-b5c8-4a54c778eb70/datastream/OBJ/view