Abstract This paper considered the problem of numerical simulation of an incompressible dam break flow consisting of three phases. The movement of the water free surface is performed using the Newtonian fluid model, and the mud mixture movement is carried out by the non-Newtonian fluid model based on the VOF method. The PISO numerical algorithm was selected as a numerical method for solving equations. This paper discusses the problems of dynamic loads arising from the impact of a dam break flow using numerical modeling. The received computational data are matched with the two experiment results, which allow confirming the behavior of the instantaneous flow and the evolution of pressure at the relative points of the obstacle. The water flow and non-Newtonian fluid for different forms of obstacles were also modeled. It was found that a non-Newtonian fluid rather strongly reduces the maximum shock the pressure value of the water flow.

中文翻译：

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VOF法对各种形式障碍物活动河床堤坝破碎波的数值研究

摘要 本文研究了不可压缩的三相溃坝水流的数值模拟问题。水自由面的运动采用牛顿流体模型进行，泥浆混合物的运动采用基于VOF方法的非牛顿流体模型进行。选择 PISO 数值算法作为求解方程的数值方法。本文使用数值模型讨论了由溃坝水流冲击引起的动态载荷问题。接收到的计算数据与两个实验结果相匹配，可以确认瞬时流动的行为和障碍物相关点的压力演变。还对不同形式障碍物的水流和非牛顿流体进行了建模。