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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : "大连理工大学-大连斯频德”联合研究中心主任
性别：男
毕业院校：西安交通大学
学位：博士
所在单位：能源与动力学院
学科：热能工程
办公地点：大连理工大学西部校区知行楼420
联系方式：Tel: 13109836979 微信号：18642809658
电子邮箱：zhuxiaojing@dlut.edu.cn
Study on liquid film thickness and flow characteristics of falling film outside an elliptical tube
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论文类型：期刊论文
发表时间：2019-07-01
发表刊物：DESALINATION AND WATER TREATMENT
收录刊物：SCIE
卷号：157
页面范围：1-7
ISSN号：1944-3994
关键字：Numerical simulation; Liquid film thickness; Liquid film velocity; Counter-current air
摘要：A three-dimensional model is applied to simulate the spreading process and thickness distribution of the liquid film outside an elliptical horizontal tube falling-film heat exchanger. Reynolds number (Re) is 187 and the counter-current air flow rates are 0, 0.1 and 0.5 m/s, respectively. The volume of fluid method is used to trace the gas-liquid interface. It is shown that falling film flow delays and the liquid film thickness increases as the gas flow rate increases. When the counter-current gas flow rate is increased to 0.5 m/s, the falling film distribution becomes uneven and local accumulation occurs. Along the circumferential direction, the liquid film velocity increases as the gas flow rate increases.