TY - JOUR
T1 - Validation of the applicability of the particle-based open-source software DualSPHysics to violent flow fields
AU - Sato, Kenta
AU - Kawasaki, Koji
AU - Watanabe, Ken
AU - Koshimura, Shunichi
N1 - Funding Information:
This study was supported by JSPS KAKENHI (Grants-in-Aid for Scientific Research) 17H06108 and 21H05001. We also thank Mr. Yoshitaka Soga for assistance in drawing the diagrams.
Publisher Copyright:
© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2021
Y1 - 2021
N2 - Emerging as powerful open-source software in recent years, “DualSPHysics” is receiving increased attention for its ability to simulate large-scale flow fields. In the context of applying open-source software, the differences in the numerical results due to different model parameters need to be investigated in detail. In this study, some benchmark problems have been solved with DualSPHysics to validate the estimation of wave impact pressure with violent breaking waves. We have demonstrated three main results: (i) as an alternative to the artificial viscosity traditionally used in DualSPHysics, a laminar viscosity model can also well reproduce the solutions to the existing benchmark problems in a violent flow field with the modified dynamic boundary condition; (ii) the dynamics of the gas phase is essential in the calculation of wave breaking with rapid gate opening; and (iii) if the density diffusion parameter is too large, the impact pressure may be underestimated. The practical contribution by this study is to find that DualSPHysics well reproduces complex breaking waves, including multi-phase gas-liquid flows, and that the wave impact pressure is accurate by comparison with existing experimental results. This allows us to understand the complex behavior of fluid-structure interactions in coastal engineering by means of DualSPHysics.
AB - Emerging as powerful open-source software in recent years, “DualSPHysics” is receiving increased attention for its ability to simulate large-scale flow fields. In the context of applying open-source software, the differences in the numerical results due to different model parameters need to be investigated in detail. In this study, some benchmark problems have been solved with DualSPHysics to validate the estimation of wave impact pressure with violent breaking waves. We have demonstrated three main results: (i) as an alternative to the artificial viscosity traditionally used in DualSPHysics, a laminar viscosity model can also well reproduce the solutions to the existing benchmark problems in a violent flow field with the modified dynamic boundary condition; (ii) the dynamics of the gas phase is essential in the calculation of wave breaking with rapid gate opening; and (iii) if the density diffusion parameter is too large, the impact pressure may be underestimated. The practical contribution by this study is to find that DualSPHysics well reproduces complex breaking waves, including multi-phase gas-liquid flows, and that the wave impact pressure is accurate by comparison with existing experimental results. This allows us to understand the complex behavior of fluid-structure interactions in coastal engineering by means of DualSPHysics.
KW - DualSPHysics
KW - Smoothed particle hydrodynamics
KW - breaking waves
KW - open-source software
KW - wave impact pressure
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U2 - 10.1080/21664250.2021.1991608
DO - 10.1080/21664250.2021.1991608
M3 - Article
AN - SCOPUS:85118453893
VL - 63
SP - 545
EP - 572
JO - Coastal Engineering in Japan
JF - Coastal Engineering in Japan
SN - 0578-5634
IS - 4
ER -