On the consistency and convergence of particle-based meshfree discretization schemes for the Laplace operator

Tasuku Tamai, Kouhei Murotani, Seiichi Koshizuka

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The Laplace operator appears in the governing equations of continua describes dissipative dynamics, and it also emerges in some second order partial differential equations such as the Poisson equation. In this paper, accuracy and its convergence rates of some meshfree discretization schemes for the Laplace operator are studied as a verification. Moreover, a novel meshfree discretization scheme for the second order differential operator which enables us to use smaller dilation parameter of the compact support of the weight function is proposed, and its application for the meshfree discretization of the Poisson equation demonstrates an improvement of the solution accuracy.

Original languageEnglish
Pages (from-to)79-85
Number of pages7
JournalComputers and Fluids
Volume142
DOIs
Publication statusPublished - 2017 Jan 5
Externally publishedYes

Keywords

  • Consistency
  • Convergence
  • Laplacian
  • Least Squares Moving Particle Semi-implicit method
  • Meshfree method
  • Particle method

ASJC Scopus subject areas

  • Computer Science(all)
  • Engineering(all)

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