A particle refinement scheme with hybrid particle interacting technique for multi-resolution SPH. (September 2020)

• Record Type: Journal Article
• Authors: Hu, Liu; HongFu, Qiang; FuZhen, Chen; Chao, Shi
• Is Part Of: Engineering analysis with boundary elements. Volume 118(2020)
• Page Start: 108
• Page End: 123
• Publication Date: 2020-09
• Subjects: Smoothed particle hydrodynamics -- Variable resolution -- Particle refinement -- Representative particle; Boundary element methods -- Periodicals; Engineering mathematics -- Periodicals; Équations intégrales de frontière, Méthodes des -- Périodiques; Mathématiques de l'ingénieur -- Périodiques; Boundary element methods; Engineering mathematics; Periodicals; 620.00151
• DOI: 10.1016/j.enganabound.2020.06.001
• Languages: English
• ISSNs: 0955-7997

Abstract

Abstract: In this paper, a particle refinement scheme with a hybrid particle interacting technique for SPH is proposed. The axis-aligned square refinement pattern is adopted to split coarse particles into fine ones and produces a new kind of particle named as "representative particles". Representative particles have the same masses and initial particle spacings as the fine ones and are used to represent coarse particles to interact with fine ones. With this treatment, interpolation errors from direct interactions of coarse and fine particles can be avoided. Numerical tests have demonstrated that the proposed particle refinement scheme is accurate and stable, and provides an effective approach to improve the simulation resolution of SPH with limited computational cost.