Liquid film flow and heat transfer model under spray impact

被引：0
|
作者：
Qi H. [1 ]
Zhang W. [1 ]
Gong L. [1 ]
机构：
[1] College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao
来源：
Huagong Xuebao/CIESC Journal | 2018年 / 69卷 / 05期
关键词：
Computational fluid dynamics; CFD; Flow; Heat transfer; Model reduction; Spray cooling;
D O I：
10.11949/j.issn.0438-1157.20171067
中图分类号：
学科分类号：
摘要：
Aiming at the shortcomings of the existing calculation model in spray cooling, based on mass, momentum and energy conservation equations, the liquid film flow and heat transfer equations of spray cooling in non- boiling region are established,and magnitude analysis method is applied to simplify equations, and numerical method is used to solve the model. Based on the given values of droplet velocity and temperature, the film thickness, average heat flux and liquid outflow temperature are solved by the model, then the calculated results are compared with the experimental results. The comparison results show that the liquid film thickness difference is less than 6%. The difference of average heat flux and final liquid temperature is less than 10%, and the results that difference less than 5% account for more than 60%. The excellent agreement between simulation and experiment confirms that this model can reasonably reflect flow and heat transfer in spray cooling. The calculated results of film thickness and temperature can deepen the understanding of spray cooling heat transfer mechanism. © All Right Reserved.
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页码：2014 / 2022
页数：8
相关论文
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