计算力学学报2024，Vol.41Issue(6)：1081-1086,1129,7.DOI:10.7511/jslx20230523002
多液滴撞击自由液面复杂流动的δ-SPH模拟
Simulation of complex flow of multi-droplet impingement on a free surface by δ-SPH method
摘要
Abstract
Based on the δ-SPH method,the multi-droplet impingement on a free surface is simulated and analyzed.First,by adding a density dissipation term and an artificial viscous term in the governing equations,the spurious numerical oscillations in pressure can be removed and the stability of the numerical scheme is ensured.Then,the impact of a single droplet on a free surface is simulated,and the reliability of the δ-SPH method is verified by comparison with the results reported in the literature.Finally,two droplets with a vertical/horizontal distribution,four droplet's with a rhombus distribution,which impinge on a free surface,are simulated,and the effects of the droplet vertical/horizontal travel.on the impact structure are analyzed.The numerical results show that:the δ-SPH method can exactly capture the strong-nonlinearity phenomena such as splashing,large-amplitude sloshing and discontinuous free surface when multi-droplets impinge on a free surface,and a smooth pressure field is also obtained.关键词
无网格法/δ-SPH/液滴撞击/自由液面/复杂流动Key words
meshless method/δ-SPH/droplet impact/free surface/complex flow分类
数理科学引用本文复制引用
郑春耀,周媛,张林..多液滴撞击自由液面复杂流动的δ-SPH模拟[J].计算力学学报,2024,41(6):1081-1086,1129,7.基金项目
多相复杂系统国家重点实验室自主部署课题(MESO-24-A04 （）
MESO-23-A01)资助项目. （）
