TY - JOUR
T1 - A dynamic particle refinement strategy in Smoothed Particle Hydrodynamics for Fluid–Structure Interaction problems
AU - Wang, Lu
AU - Xu, Fei
AU - Yang, Yang
AU - Wang, Jingyu
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/3
Y1 - 2019/3
N2 - The implementation of dynamic refinement in Smoothed Particle Hydrodynamics (SPH) cannot only describe the physical field more minutely but also decrease the computational cost because of the finer spatial resolution and the locally self-adaptive refinement. However, there are several challenges to realize the dynamic refinement in SPH to achieve improved performance. Based on these challenges, this paper provides a general dynamic refinement strategy, and a new refinement criterion involving two-phase materials is proposed to capture the interface more precisely in Fluid–Structure Interaction (FSI) problems. To prove the validity of the strategy, three different models for SPH simulations, including the dynamic refinement model, no refinement model and total refinement model, are designed for a case of water entry of a wedge. By measuring the energy, acceleration and surface pressure of the wedge and comparing the computational cost, the results indicate that this strategy can obtain better accuracy and efficiency, which demonstrates high potential for extension of SPH application to FSI problems. Meanwhile, the new refinement criterion is proven to be more effective than other single-phase refinement criteria.
AB - The implementation of dynamic refinement in Smoothed Particle Hydrodynamics (SPH) cannot only describe the physical field more minutely but also decrease the computational cost because of the finer spatial resolution and the locally self-adaptive refinement. However, there are several challenges to realize the dynamic refinement in SPH to achieve improved performance. Based on these challenges, this paper provides a general dynamic refinement strategy, and a new refinement criterion involving two-phase materials is proposed to capture the interface more precisely in Fluid–Structure Interaction (FSI) problems. To prove the validity of the strategy, three different models for SPH simulations, including the dynamic refinement model, no refinement model and total refinement model, are designed for a case of water entry of a wedge. By measuring the energy, acceleration and surface pressure of the wedge and comparing the computational cost, the results indicate that this strategy can obtain better accuracy and efficiency, which demonstrates high potential for extension of SPH application to FSI problems. Meanwhile, the new refinement criterion is proven to be more effective than other single-phase refinement criteria.
KW - Criterion
KW - Dynamic refinement
KW - Fluid–Structure Interaction (FSI)
KW - Smoothed Particle Hydrodynamics (SPH)
UR - http://www.scopus.com/inward/record.url?scp=85044315053&partnerID=8YFLogxK
U2 - 10.1016/j.enganabound.2018.01.012
DO - 10.1016/j.enganabound.2018.01.012
M3 - 文章
AN - SCOPUS:85044315053
SN - 0955-7997
VL - 100
SP - 140
EP - 149
JO - Engineering Analysis with Boundary Elements
JF - Engineering Analysis with Boundary Elements
ER -