全文下载：2014010043
张宪瑞1， 耿天奇2， 毕荣山1*
(1.青岛科技大学 计算机与化工研究所，山东 青岛 266042；2.甘肃银光化学工业集团有限公司，甘肃 白银 730900)
摘要：采用数值模拟的方法研究气液喷射器内液滴的运动轨迹，液相流场采用离散相模型。研究粒径和液滴速度对液滴运动轨迹的影响，探索了单一液滴和不同RosinRammler分布函数下液滴的运动轨迹。结果表明，气相旋转气流并没有对液滴的轨迹造成太大的影响，液滴仍是以接近直线的形式向前运动；离散相液滴最终的速度主要取决于气相速度，与液滴粒径大小、粒径分布和初速度无关；液滴的运动轨迹随着RosinRammler分布中均匀性系数的增加，液滴速度的增大和平均粒径的减小而发生改变，造成离散相液滴喷出趋向于集中和液滴相对远离壁面。
关键词：气液喷射器； 液滴粒径分布函数； 气液两相流； 数值模拟
中图分类号： TQ 018文献标志码： A
Numerical Simulation for Droplet Track of Different Particle Size Distribution Function in the Gasliquid Twophase Ejector
ZHANG Xianrui1, GENG Tianqi2, BI Rongshan1
(1. Research Center for Computer and Chemical Engineering，Qingdao University of Science and Technology, Qingdao 266042, China; 2. Gansu Yinguang Chemical Industry Group Co. Ltd, Baiyin 730900, China)
Abstract: The movement track of the droplet in the gasliquid twophase has been studied by numerical simulation and the discrete phase model was adopted for liquid field. The motion trajectory of droplets was investigated on the conditions of different size and droplet, and the droplet motion trajectory of a single droplet with different RosinRammler distribution was explored. The results show that there has little effect of rotating airflow in the gas phase on the trajectory of droplets, and the droplet is still move forward in the form of close to straight line. The final speed of discrete phase droplet mainly depends on the velocity of gas phase, and is independent of droplet size,droplet size distribution and droplet initial velocity. With the increase of spread parameter on the droplet size distribution and droplet velocity, or the discrease of mean diameter. the extrusive droplet tends to be concentrated and relatively far away from the wall.
Key words: the gasliquid twophase ejector； droplet size distribution function； gasliquid two phase flow； numerical simulation
收稿日期： 20121214
基金项目： 中国科学院化学激光重点实验室开放基金项目（KLCL200901）;山东省自然科学青年基金项目（ZR2009BL015）;国家自然科学基金项目（2020619）.
作者简介： 张宪瑞(1985—)，男，硕士研究生.*通信联系人.
