气体介质中海水液滴碰撞过程数值模拟

梁伟; 齐晓霓; 尹强; 赵强

doi:10.21656/1000-0887.390053

气体介质中海水液滴碰撞过程数值模拟

doi: 10.21656/1000-0887.390053

山东理工大学交通与车辆工程学院, 山东淄博 255049

基金项目: 国家自然科学基金(51309147;51249001)

详细信息

作者简介:
梁伟(1993— )，男，硕士生(E-mail: 18353362350@163.com);齐晓霓(1974— )，女，副教授，博士，硕士生导师(通讯作者. E-mail: nini@sjtu.org).

中图分类号: TK284.9
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- 被引次数: 0
出版历程
- 收稿日期: 2018-02-01
- 修回日期: 2018-09-26
- 刊出日期: 2018-11-01

Numerical Simulation of Seawater Droplets Collision in Gaseous Environment

School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo,Shandong 255049, P.R.China

Funds: The National Natural Science Foundation of China(51309147; 51249001)

摘要

摘要: 为揭示对喷式海水无填料冷却塔内海水液滴碰撞的规律及影响因素，采用VOF方法开展了相同尺寸的二元海水液滴碰撞数值模拟．首先利用Qian等的实验结果对计算模型进行校验，验证了模拟的准确性．开展了常温常压下不同Weber(韦伯)数以及不同碰撞参数下的海水液滴碰撞过程数值模拟，计算Weber数范围为0.5~200，碰撞参数范围为0~1．得到了聚合、自反分离以及拉伸分离3种碰撞结果，对心碰撞聚合与自反分离的临界Weber数为22；然后对结果类型进行统计，得到了海水液滴碰撞结果分布We-x图.
- 海水 /
- 液滴碰撞 /
- VOF方法 /
- 网格自适应
Abstract: Numerical simulation of binary collision between equal-sized seawater droplets was conducted with the VOF method, to reveal the mechanism and the influential factors for colliding seawater droplets in the seawater shower cooling tower. Veracity of the numerical models was firstly validated with the experimental results of Qian. The binary collision of equal-sized droplets were simulated with various Weber numbers and impact parameters under room temperature and pressure conditions. The Weber number ranged from 0.5 to 200 and the impact parameter ranged from 0 to 1. The simulation gave 3 different types of outcomes: coalescence, reflexive separation and stretching separation. The results show that the critical Weber number of head-on collision between coalescence and reflexive separation is 22. The We-x diagrams of various collision regimes of seawater droplets were also obtained.
- seawater /
- droplet collision /
- VOF method /
- adaptive mesh method

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参考文献(19)

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