Applied Mathematics and Mechanics (English Edition) ›› 2025, Vol. 46 ›› Issue (6): 1187-1214.doi: https://doi.org/10.1007/s10483-025-3262-9

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Numerical investigation on a comprehensive high-order finite particle scheme

Yudong LI1,2,3, Yan LI1,2,(), Chunfa WANG1,2, P. JOLI3, Zhiqiang FENG1,2,3   

  1. 1.School of Mechanics and Aerospace Engineering, Southwest JiaotongUniversity, Chengdu 610031, China
    2.Advanced Structural Material Mechanics and Service Safety Key Laboratory of Sichuan Province, Chengdu 610031, China
    3.Laboratory of Mechanics and Energy, Univ-Evry, Paris-Saclay University, Evry 91190, France
  • Received:2024-12-24 Revised:2025-04-23 Published:2025-06-06
  • Contact: Yan LI E-mail: yanli@swjtu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (No. 12002290)

Abstract:

In the field of discretization-based meshfree/meshless methods, the improvements in the higher-order consistency, stability, and computational efficiency are of great concerns in computational science and numerical solutions to partial differential equations. Various alternative numerical methods of the finite particle method (FPM) frame have been extended from mathematical theories to numerical applications separately. As a comprehensive numerical scheme, this study suggests a unified resolved program for numerically investigating their accuracy, stability, consistency, computational efficiency, and practical applicability in industrial engineering contexts. The high-order finite particle method (HFPM) and corrected methods based on the multivariate Taylor series expansion are constructed and analyzed to investigate the whole applicability in different benchmarks of computational fluid dynamics. Specifically, four benchmarks are designed purposefully from statical exact solutions to multifaceted hydrodynamic tests, which possess different numerical performances on the particle consistency, numerical discretized forms, particle distributions, and transient time evolutional stabilities. This study offers a numerical reference for the current unified resolved program.

Key words: numerical method, high-order finite particle method (HFPM), kernel gradient correction (KGC), decoupled finite particle method (DFPM), weakly compressible smoothed particle hydrodynamics (SPH)

2010 MSC Number: 

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