Wave Impact Simulations by an Improved ISPH Model
Wave Impact Simulations by an Improved ISPH Model
复制标题
通过改进的 ISPH 模型进行波浪冲击模拟
DOI:
10.1061/(asce)ww.1943-5460.0000239
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发表时间:
2014-05
期刊:
影响因子:
--
通讯作者:
Ping Dong
中科院分区:
文献类型:
--
作者:
Qinqin Gui;Songdong Shao;Ping Dong
AbstractThis paper presents an improved incompressible smoothed particle hydrodynamics (ISPH) method for wave impact applications. In most conventional ISPH techniques the source term of the pressure Poisson equation (PPE) is usually treated by either a density invariant or a velocity divergence-free formulation. In this work, both the density invariant and velocity divergence free formulations are combined in a weighted average form to determine the source term. The model is then applied to two problems: (1) dam-breaking wave impact on a vertical wall and (2) solitary wave run-up and impact on a coastal structure. The computational results have indicated that the combined source term treatment can predict the wave impact pressure and force more accurately compared with using either formulation alone. It was further found that depending on the application case, the influence of the density invariant and divergence-free parts could be quite different. For the more violent wave impact case, the divergence-f...
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