COMPUTATIONAL MECHANICS OF A BLOCKING OF GATELESS BOTTOM OUTLET BY DRIFT WOODS
COMPUTATIONAL MECHANICS OF A BLOCKING OF GATELESS BOTTOM OUTLET BY DRIFT WOODS
复制标题
浮木堵塞无门底部出口的计算力学
DOI：
10.2208/prohe.50.793
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
T. Sumi
中科院分区：
文献类型：
--
作者：
H. Ikari;H. Gotoh;T. Sumi
一些防洪大坝在河床高程处有一个无闸门底孔。这种水坝的管理很容易，因为闸门操作是不必要的，而且几乎没有由蓄水引起的环境问题，如水库沉积和水质变化。河床底部出口的设计必须能够在洪水期间安全通过大量浮木。三维自由表面流动在出口的口部附近占主导地位。因此，粒子法是一种有效的方法，它可以显式地处理复杂的水面变化。本研究提出将浮体三维模型引入三维MPS方法。对浮木堵塞底孔的现象进行了数值模拟。
Some flood-control dams have a gateless bottom outlet at a riverbed elevation. A management of this kind of dams is easy, because gate operation is unnecessary and there is almost no environmental problems caused by impounding such as a reservoir sedimentation and water quality changes. The river-bed bottom outlet must be designed to pass a large quantity of driftwood safely during flood events. A three-dimensional free-surface flow is predominant in the neighborhood of a mouth of the outlet. Therefore, the particle method, which can handle a complicated water-surface change explicitly, is effective. In this study, three-dimensional model of floating bodies are proposed to be introduced into the three-dimensional MPS method. A simulation of a blocking phenomena by driftwood at the bottom outlet is carried out.