A new particle generation method for arbitrary 2D geometries in SPH modeling
Xiao, Yihua, Dong, Huanghuang, Zhan, Haifei, & Gu, Yuantong (2017) A new particle generation method for arbitrary 2D geometries in SPH modeling. International Journal of Computational Methods, 14(1), Article no. 1750023.
For smoothed particle hydrodynamics (SPH), homogeneous particle distribution is important to ensure the computational accuracy and stability, but it is hard to achieve this for complex geometries. In this paper, a new particle generation method is developed to generate particles for arbitrary 2D geometries. In the method, the geometry required for generating particles is orthogonally partitioned into a series of sub-domains. Among the resultant sub-domains, the most ones having standard area are directly converted into particles. The others are iteratively meshed into elements with nearly standard area and particles are placed according to these elements. The present method is implemented based on Abaqus. Examples of particle generation are given to compare various particle generation methods. It is found that the present method shows advantages over some existing methods in the approximation of geometric boundary as well as the regularity and homogeneity of particle distribution. Several physical problems are adopted to examine the influence of initial particle distribution on SPH solution. The calculated results show that particle distributions generated by the present method can lead to better accuracy and stability than those created by some existing methods.
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|Item Type:||Journal Article|
|Keywords:||Smoothed particle hydrodynamics, particle generation, arbitrary 2D geometry, homogeneity|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2017 World Scientific Publishing Company|
|Deposited On:||13 Oct 2016 23:38|
|Last Modified:||17 Oct 2016 01:31|
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