摘要
为研究在废气管道内部的喷雾降温过程中不同的喷嘴安装角度对管道内高温废气的降温情况的影响,本文采用DDM (Dispersion Droplet Model)离散液滴模型描述喷雾液滴的运动和传质传热过程,使用实验所得的喷雾粒径数据,在CFX软件上分别对不同喷嘴安装角、不同喷雾流量的管道内部的喷雾降温过程进行了数值模拟,讨论了喷嘴安装角和流量变化对喷雾液滴的轨迹和管道内的温度分布情况造成的影响。根据模拟计算结果得到结论:当雾滴不能完全蒸发的情况下,喷嘴安装角为180?时,管道内高温废气的降温效果最为理想。
This paper investigates how different spray nozzle install angle influence the spray cooling effect inside an industrial exhaust pipe by numerical simulation software CFX. DDM (Dispersion Droplet Model) is applied to describe the motion and heat transfer progress of the atomized water droplet;the size and the distribution of the water particles used in calculation are given according to experiments. The particle tracks and the temperature distributions of each spray nozzle install angle with different spray mass flow are discussed basing on the simulation results. In conclusion, when the spray droplets are not completely vaporized and the nozzle install angle is 180?, the spray cooling effect is the most satisfied.
作者
陈嘉琛
吴伟亮
Jiachen Chen;Weiliang Wu(School of Energy and Power Engineering, Shanghai Jiao Tong University, Shanghai)
出处
《机械工程与技术》
2017年第1期1-10,共10页
Mechanical Engineering and Technology
关键词
喷雾降温
雾化
管道
喷嘴安装角
CFD
Spray Cooling
Atomization
Pipe
Install Angle of the Spray Nozzle
CFD
