Because involving a large number of discrete particles interacting with water, simulating the fluid–solid coupling problem of landslide‐generated waves in a virtual environment is very difficult. This paper employs the DualSPHysics multiphase flow model to relatively easily simulate the dynamics of landslide‐generated waves in large scales. In addition, the simulation results are well visualized by the marching cubes algorithm. It is found that, when the factors of the landslide scale, the water length, and water depth are fixed, the initial maximum wave height decreases as the water width increases. After the water is squeezed by the falling slider, one‐way and two‐way propagations of the surge are generated under 2D and 3D conditions, respectively. In addition, under the true‐3D condition, although the initial swell generated is smaller than the 2D and quasi‐2D conditions, it will generate a large wave height during the climbing and undulation of the near shore. In the 2D condition, the surge generated is almost the largest. Therefore, when using the DualSPHysics multiphase flow model to predict the maximum wave height generated by landslide surges, a 2D simulation can be used to improve work efficiency.

中文翻译：

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基于DualSPPhysics多相流模型的滑坡波浪灾害预测

由于涉及与水相互作用的大量离散粒子，在虚拟环境中模拟滑坡产生的波浪的流固耦合问题非常困难。本文采用 DualSPPhysics 多相流模型相对容易地模拟大尺度滑坡产生的波浪动力学。此外，通过Marching Cubes算法可以很好地可视化模拟结果。研究发现，当滑坡尺度、水长、水深等因素固定时，初始最大波高随着水宽的增加而减小。在水被下落的滑块挤压后，分别在 2D 和 3D 条件下产生单向和双向传播的浪涌。此外，在真 3D 条件下，虽然产生的初始涌浪小于二维和准二维条件，但在近岸爬升和起伏过程中会产生很大的波高。在二维条件下，产生的浪涌几乎是最大的。因此，在使用 DualSPPhysics 多相流模型预测滑坡浪涌产生的最大波高时，可以使用二维模拟来提高工作效率。