Proof-of-concept model tests on a novel self-deploying on-shore tsunami barrier were executed. The tsunami barrier consists of a membrane, floater, and cables that are stored underground. Due to buoyancy the barrier self-deploys when struck by a tsunami. The membrane and cables consist of the strong, flexible, and light-weight material Dyneema that can resist a 20 m high water column. A novel tsunami generating method was applied to generate a high-velocity initial bore, followed by a long duration high water level, using a normal piston type wave maker in a wave flume. Numerical calculations using a numerical volume-of-fluid code were used to tune the tsunami generation. The tests showed that the tsunami barrier indeed automatically deployed and completely blocked a 19 m high (reflected) tsunami for bore velocities up to 7.5 m/s. For higher bore velocities the barrier still deployed. For larger tsunamis (with a 33 m reflected water depth) the barrier remained erected, although overflow evidently occurred.
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机译:对新型的自部署岸上海啸屏障进行了概念验证模型测试。海啸屏障由膜,漂浮物和存储在地下的电缆组成。由于浮力,屏障在遭受海啸袭击时会自行部署。膜和电缆由坚固,灵活且轻巧的材料迪尼玛(Dyneema)组成,可以抵抗20 m高的水柱。使用一种新颖的海啸产生方法,在波浪形水槽中使用普通的活塞式造波器,产生高速度的初始钻孔,然后产生高持续时间的高水位。使用数字流体量代码进行的数字计算被用来调整海啸的产生。测试表明,海啸屏障确实可以自动展开并完全阻挡了19 m高(反射)的海啸,其钻孔速度高达7.5 m / s。对于更高的速度,障碍物仍在部署。对于较大的海啸(反射水深为33 m),尽管明显发生了溢流,但障碍物仍然竖立起来。
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