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首页> 外文期刊>Journal of hydro-environment research >A hybrid stabilization technique for simulating water wave - Structure interaction by incompressible Smoothed Particle Hydrodynamics (ISPH) method
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A hybrid stabilization technique for simulating water wave - Structure interaction by incompressible Smoothed Particle Hydrodynamics (ISPH) method

机译：用不可压缩的光滑粒子流体动力学（ISPH）方法模拟水波-结构相互作用的混合稳定技术

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摘要

The Smoothed Particle Hydrodynamics (SPH) method is emerging as a potential tool for studying water wave related problems, especially for violent free surface flow and large deformation problems. The incompressible SPH (ISPH) computations have been found not to be able to maintain the stability in certain situations and there exist some spurious oscillations in the pressure time history, which is similar to the weakly compressible SPH (WCSPH). One main cause of this problem is related to the non-uniform and clustered distribution of the moving particles. In order to improve the model performance, the paper proposed an efficient hybrid numerical technique aiming to correct the ill particle distributions. The correction approach is realized through the combination of particle shifting and pressure gradient improvement. The advantages of the proposed hybrid technique in improving ISPH calculations are demonstrated through several applications that include solitary wave impact on a slope or overtopping a seawall, and regular wave slamming on the subface of open-piled structure.
机译：平滑粒子流体动力学（SPH）方法正在成为研究水波相关问题的潜在工具，特别是对于剧烈的自由表面流和大变形问题。已经发现不可压缩的SPH（ISPH）计算在某些情况下不能保持稳定性，并且在压力时间历史中存在一些虚假振荡，类似于弱可压缩的SPH（WCSPH）。此问题的一个主要原因与运动粒子的不均匀和聚集分布有关。为了提高模型性能，本文提出了一种有效的混合数值技术，旨在校正不良颗粒的分布。通过结合颗粒移动和压力梯度改善来实现校正方法。拟议的混合技术在改善ISPH计算方面的优势已通过多种应用得到了证明，这些应用包括对边坡或海堤上空的孤波冲击，以及在裸桩结构下表面的规则波撞击。

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  • 来源
    《Journal of hydro-environment research》 |2018年第2期|77-94|共18页
  • 作者

    Zhang Ningbo; Zheng Xing; Ma Qingwei; Duan Wenyang; Khayyer Abbas; Lv Xipeng; Shao Songdong;

  • 作者单位

    Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Heilongjiang, Peoples R China;

    Kyoto Univ, Dept Civil & Earth Resources Engn, Kyoto 6158540, Japan;

    Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Heilongjiang, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Hybrid stabilization; ISPH; Minimum pressure; Particle shift; Wave impact;

    机译：混合稳定;ISPH;最小压力;颗粒位移;波冲击;

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