Mesh-Based Boundary Model of Incompressible Smoothed Particle Hydrodynamics for Wave¬–Structure Interaction Problems

  • Mitsume, Naoto (University of Tsukuba)
  • Tsunemi, Takayuki (University of Tsukuba)
  • Omura, Hiroyuki (University of Tsukuba)

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This study develops a highly accurate ghost cell boundary (GCB) model for mesh-free particle methods that applies semi-implicit time integration, such as incompressible smoothed particle hydrodynamics (ISPH). The GCB model enables us to directly use finite elements as the wall boundary of complex shapes and be suitable for wave–structure interaction analyses by using finite element methods. However, conventional GCB model can not treat solid boundary conditions accurately, and is formulated for particle methods with explicit schemes. Therefore, we introduced the fixed ghost particle approach into the GCB model to improve the accuracy for solid boundary conditions and we introduced the improved GCB model to stabilized ISPH method.