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- Akkerman, G.J. (author), Verheij, H.J. (author) report 1998
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Koppel, T. (author)Experiments on unsteady separating flow past a sudden expansion in an open channel are described. To simulate tidal flow the flow rate in the approach channel varied as a half-sine with time. Different visualization techniques to obtain an insight into the behaviour of the separating vortex in time and space were used. Laser-Doppler velocimetry ...report 1981