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Positive Front of Dambreak Wave on Rough Bottom

Author(s): Frank Blaser; Willi H. Hager

Linked Author(s): Willi H. Hager

Keywords: Dambreak wave; Positive wave front; Rough bottom; Scale effects

Abstract: Experimental data obtained at the Laboratory of Hydraulics, Hydrology and Glaciology (VAW) of the Swiss Federal Institute of Technology at Zurich (ETHZ) are presented for wave fronts on three different bottom slopes from horizontal up to 50% . The geometry of the straight channel is rectangular and turbulent flow on a rough and initially dry bottom was considered. The experiments were compared with mathematical results optained by Dressler (1952) for the horizontal channel. Furthermore the theory of Lauber (1997) for the propagation of the positive wave front on the smooth bottom was adapted to the rough channel bottom and compared with experimental data obtained for the sloping channel.


Year: 1999

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