丙三醇溶液液滴形成过程的数值模拟  

Numerical Simulation of Droplet Formation of Glycerin in Water

作　　者：刘赵淼[1] 刘华敏[1] 金艳梅[1] 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100022

出　　处：《北京工业大学学报》2008年第1期14-19,共6页Journal of Beijing University of Technology

基　　金：国家自然科学基金(10502002);北京市科委科技新星资助项目(H020821220120)

摘　　要：为了更为精确地研究液滴的形成和下落过程,对不同质量分数丙三醇溶液液滴的形成进行了数值模拟,得到的水滴形成过程与实验结果非常吻合、对不同的溶液液滴的长度、形成时间以及体积进行模拟和比较发现,质量分数对液滴形成有明显影响.结果表明,数值模拟在研究液滴形成和下落问题上具有很好的适用性.To find a more accurate method to research the formation of the droplets, the numerical simulation method is applied to study glycerin in water. Simulation of the water drop is consistent with experiment results very well. Influence of mass fractions on broken time, length and volume of the droplets are also considered. When the mass fraction varies from 0 to 80 %, the broken time decreases from 4. 002 s to 3. 366 s, meanwhile the droplet＇s volume decreases from 1. 063 μL to 0. 946 7 μL. The droplet＇s length changes a little between water and 20 % glycerin solution, but the length of glycerin solution of more than 60 % is longer than that of less than 20 %. Numerical simulation is proved to be an excellent method to investigate the droplet＇s formation.

关 键 词：液滴 数值模拟 丙三醇 体积分数法 

分 类 号：O351.2[理学—流体力学]