Initial particle placement based on the centroidal Voronoi tessellation for the particle method

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Other Title
  • 重心ボロノイ分割に基づく粒子法向け粒子初期配置

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<p>The particle methods such as the SPH method and the MPS method have been widely used for the analysis of free-surface flows. This paper focuses on the initial placement of particles for the particle method. The initial particle placement on the regular Cartesian grid is generally adopted. However, it is difficult to represent slopes and curved surfaces of the wall boundary and then has negative effects on the precision of the numerical calculation. To solve this issue, we propose a new initial particle placement determined by the centroidal Voronoi tessellation (CVT), which is a special type of Voronoi tessellation. Using CVT in the two dimensional case, Voronoi cells asymptotically agree to regular hexagon grid. In this paper, we propose a CVT-based particle placement algorithm and then demonstrates some numerical examples with curved wall boundaries in the MPS method.</p>

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Details 詳細情報について

  • CRID
    1390845713056189696
  • NII Article ID
    130007609445
  • DOI
    10.11421/jsces.2019.20190002
  • ISSN
    13478826
    13449443
  • Text Lang
    ja
  • Article Type
    journal article
  • Data Source
    • JaLC
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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