Author(s): Nils Goseberg, Jacob Stolle, Caren Derschum, Ioan Nistor
Linked Author(s): Nils Goseberg
Keywords: Dam-break, extreme flow conditions, swing gate, experimental hydraulics, opening time
Abstract: Bore-type flow is often associated with natural hazards such as dam- or dike-breaches, storm surges or on-land tsunami flow. In this paper, dam-break waves generated by a swing gate are investigated in an attempt to model such hazard in laboratory conditions. An analytical framework for the gate motion is presented. The motion of the swing gate is analyzed with respect to the parameters, which are: counter weight and impoundment depth, which that influence the gate opening time. While the repeatability of the gate opening was proven to be very favorable, resulting free surface time-histories showed major influence of the gate opening velocity close to the gate. Further downstream, the surface time-histories returned to the theoretically prescribed Ritter solution for ideal dam-breaks
Year: 2017