Development of Polygon Wall Boundary Model Considering Corners of Wall Domain and Application to ISPH Method

• OMURA Hiroyuki

  University of Tsukuba

• MITSUME Naoto

  University of Tsukuba

• ASAI Mitsuteru

  Kyushu University

• ISOBE Daigoro

  University of Tsukuba

Bibliographic Information

Other Title

• 壁領域の角を考慮したポリゴン壁境界モデルの開発およびその ISPH 法への適用

Abstract

In this paper, we develop a polygon wall boundary model with consideration of corners of wall domain that is suitable for semi-implicit particle method, such as Incompressible Smoothed Particle Hydrodynamics (ISPH) method. The polygon model is based on Explicitly Represented Polygon (ERP) model, and definition of reflecting operation for surface polygon is extended in order to eliminate error occurred near corners in the original ERP model. Besides, volume of wall domain expressed near corners are modified using an approximate formula based on planer angle and solid angle of corners to improve accuracy of the calculation. We introduce the improved ERP model to ISPH method, and solve three-dimensional hydrostatic and dam break problems as numerical examples. According to the results, it is confirmed that the improved ERP model can obtain more accurate and smoothed distributions of pressure than the previous ERP model.

Journal

• Transactions of the Japan Society for Computational Engineering and Science

  Transactions of the Japan Society for Computational Engineering and Science 2021 (0), 20210011-20210011, 2021-07-15

  JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE

Keywords

• Particle Method
• Incompressible SPH Method
• Polygon Wall Boundary Model
• Solid Angle

Details

• CRID: 1390851651020858112
• NII Article ID: 130008065144
• DOI: 10.11421/jsces.2021.20210011
• ISSN: 13478826
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed