摘要
液滴撞击固体表面现象在很多领域十分常见且有重要作用。液滴撞击固体表面的撞击力特性是液滴撞击固体表面过程研究的重要特性之一,其研究近年来受到很多学者关注。该文采用有限体积法和VOF(Volume of Fluid)方法,通过Fluent仿真软件数值研究了液滴撞击球形表面产生的撞击力特性。数值计算结果表明,球面直径对液滴撞击其表面的撞击力有显著影响,在其它撞击条件相同情况下,球面直径越小,液滴撞击力峰值越小,撞击力峰值出现时间越早。通过分析数值计算结果,得到了无量纲撞击力随无量纲时间的变化曲线。数值计算结果也揭示了撞击力达到峰值时的液滴形态特征。
Droplet impingement on solid surface is very common and important in many fields. The impact force of droplets impacting on solid surface is one of the important characteristics of the impact process, which has attracted many scholars’ attention. In this paper, the finite volume method and VOF method are used to numerically study the impact force characteristics of droplets impacting on spherical surfaces. The numerical results show that the diameter of the sphere has a significant influence on the impact force of droplets on its surface. Under the same impact conditions, the smaller the diameter of the spherical surface is, the smaller the peak value of the impact force of droplets is, and the earlier peak value of the impact force appears. By analyzing the numerical results, the relationship variation of dimensionless impact force with dimensionless time is obtained. The numerical results also reveal the droplet shape characteristics when the impact force reaches its peak value.
作者
汪顺
王文雷
郭加宏
WANG Shun;WANG Wen-lei;GUO Jia-hong(Shanghai Institute of Applied Mathematics and Mechanics,Shanghai 200072,China)
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2020年第2期222-228,共7页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金项目(11372174)。
关键词
液滴撞击
球面
撞击力
数值模拟
droplet impact
spherical surface
impact force
numerical simulation
作者简介
汪顺(1994-),男,安徽安庆人,硕士研究生;通讯作者:郭加宏,E-mail:jhguo@staff.shu.edu.cn。
