LAGRANGIAN PARTICLE METHOD FOR ANALYSIS OF DAM-UP PROCESS BY DRIFT TIMBERS
LAGRANGIAN PARTICLE METHOD FOR ANALYSIS OF DAM-UP PROCESS BY DRIFT TIMBERS
复制标题
流木筑坝过程分析的拉格朗日粒子法
DOI：
10.2208/prohe.45.919
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
M. Hayashi
中科院分区：
文献类型：
--
作者：
H. Gotoh;T. Sakai;M. Hayashi
近年来，由于台风造成的山坡倒木的存在，增加了生产漂木的潜力。因此，漂流木对河流建筑物（如桥梁）的影响需要澄清。本文采用MPS方法模拟了山溪小桥漂流木的筑坝过程，并附加了刚体运动跟踪子程序作为漂流木模型。该模型较好地描述了流体-木材混合物的质量守恒、流体-木材的相互作用、木材间的碰撞以及流体的破碎和聚结（包括水面波和飞溅）。很好地再现了一座小桥的溃坝和溢流的复杂时变过程。
Recently, a potential of the production of drift timbers increases due to the existence of the fallen trees in mountainside caused by a gale of typhoon. Hence, the effect of drift timbers on river structures, such as a bridge, are required to be clarified. Here, the dam-up process of drift timbers at a small bridge in mountain stream are simulated by the MPS method, to which the subroutine for tracking the motion of rigid body is attached as a model of drift timbers. The mass conservation of fluid-timber mixture, the fluid-timber interaction, the inter-timber collision, and the fragmentation and coalescence of fluid including a water surface wave and a splash are well described by the present model. The complicated time-dependent process of the dam-up and resultant overflow at a small bridge are well reproduced.
影响因子：
1.2
作者：
Koshizuka, S;Oka, Y
通讯作者：
Oka, Y