Modeling and simulation of droplet impact on an elastic beam based on FEM-SPH and SPH-SPH FSI methods

• Published in: Ocean engineering 2024-10, Vol.310, p.118730, Article 118730
• Main Authors: Huo, Ye, Zhong, Yuguang, Xin, Minyan, Li, Songcheng
• Format: Article
• Language: English
• Subjects: Droplet; Elastic beam; Finite element method (FEM); Simulation; Smoothed particle hydrodynamics (SPH)
• ISSN: 0029-8018
• DOI: 10.1016/j.oceaneng.2024.118730

Droplet impact is a common physical phenomenon in the field of ocean engineering. During ship navigation, a large number of droplets are splashed, broken and fused. It can cause corrosion and impact to ship equipment. Therefore, it is necessary to study the droplet interactions, especially the droplet-solid interactions. In this manuscript, numerical models based on two different methods, FEM-SPH and SPH-SPH are proposed to simulate the process of droplet impacting on an elastic beam. In addition, continuum surface force model is added to consider the effect of surface tension on droplet motion. The robustness and correctness of the continuum surface force model are verified by simulating square droplet deformation and droplet fusion. The numerical model presented in the manuscript reproduces the phenomena and characteristics of deformation, diffusion, rebound and contraction during droplet impact, and reproduces the free vibration phenomenon of an elastic beam. The correctness of the numerical model is proved by theoretical formulations, experimental verification and mutual verification of the two methods. •Numerical models of droplet impact an elastic beam based on two methods, FEM-SPH and SPH-SPH, are presented.•The continuous surface force algorithm is introduced to consider the effect of surface tension on droplet.•The validation of the accuracy and robustness of the numerical model is carried out by experiments, theoretical formulations, and mutual validation of the two different methods.•The manuscript comprehensively covers the motion, deformation and mechanical characteristics of droplet impacting an elastic beam for FSI model.