应用数学和力学2023，Vol.44Issue(12)：1512-1521,10.DOI:10.21656/1000-0887.440043
玻璃微珠液滴碰撞分离过程数值研究
Numerical Study on the Collision-Separation Process of Glass Bead Droplets
摘要
Abstract
The coupled level set and volume of fluid(CLSVOF)method was used to simulate the collision process of glass bead droplets with the same diameter,with the physical mechanism during the collision-separa-tion behavior of glass bead droplets mainly studied.Based on the comparative verification with n-tetradecane droplet collision experiments,the morphological changes and energy change patterns of glass bead droplets during the separation process were investigated numerically.The research shows that,the energy required for the collision and separation process of glass bead droplets mainly comes from the kinetic energy and surface en-ergy of the droplets,and most of the kinetic energy would convert into viscous dissipation energy.Through the analysis of the changes of droplet energy and average total pressure,4 important states of droplet collision and separation were obtained,including the radial stretching to limit,the radial contraction and axial stretching to balance,the axial stretching to limit,and the droplet bridge pinching separation.The velocity and pressure dis-tributions of the 4 states were discussed.The results reveal that,the end pinchoff mechanism is a main cause for droplet collisional separation.The work provides a basis for enriching the theory about glass bead droplet collisions.关键词
玻璃微珠/液滴碰撞/耦合水平集和流体体积方法/数值模拟Key words
glass bead/droplet collision/CLSVOF method/numerical simulation分类
力学引用本文复制引用
李慧玲,胡晓磊,余子寒,谢能刚..玻璃微珠液滴碰撞分离过程数值研究[J].应用数学和力学,2023,44(12):1512-1521,10.基金项目
安徽省高等学校自然科学研究重点项目(KJ2021A0368) （KJ2021A0368）
安徽省高校优秀科研创新团队(2022AH010027) （2022AH010027）
