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Smoothed particle hydrodynamics method with partially defined fluid particles
Author(s) -
Kanetsuki Y.,
Wells J. C.,
Nakata S.
Publication year - 2018
Publication title -
mathematical methods in the applied sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.719
H-Index - 65
eISSN - 1099-1476
pISSN - 0170-4214
DOI - 10.1002/mma.4252
Subject(s) - smoothed particle hydrodynamics , fluid dynamics , computation , particle (ecology) , fluid motion , flow (mathematics) , mechanics , mathematics , fluid parcel , classical mechanics , motion (physics) , statistical physics , physics , algorithm , geology , oceanography
This paper presents a method for nested fluid simulation based on smoothed particle hydrodynamics. Given suitable background flow information of an “external flow” as it evolves in time, our method simulates the motion of particles only within a local material region. In order to perform the simulation, the background physical quantities need to be transferred to the local fluid particles. We employ ghost particles to carry the given physical quantities to the nested fluid. We also solve the problem of density computation appropriately for the ghost particles. Our numerical tests show that accurate local fluid motion can be obtained in such a nested volume of fluid particles. Copyright © 2016 John Wiley & Sons, Ltd.