摘要
基于CFD技术对一种新型液包气雾化喷嘴内部的气液两相流流场进行了数值模拟,分析了该喷嘴内部气液两相流的流动特性,得到气相和液相入口压力对气液两相流流动特性的影响,并结合试验数据对模拟结果进行了验证.结果表明:当气相和液相入口压力在0.1～0.5 MPa变化时,喷嘴的出口湍流强度随气相和液相入口压力的提高而增大;提高气相入口压力有利于减小雾化粒径;提高液相入口压力有利于提高雾化粒径的均匀性.
Numerical simulation and analysis were carried out on two-phase flow field in a new type gas-outside liquid-inside atomizer by computational fluid dynamics （CFD） technique, during which the influence of inlet gas/liquid pressure on the two-phase flow was studied, while the simulation results verified with experimental data. Results show that the outlet turbulence intensity of nozzle increases with the rise of inlet gas/liquid pressure in the range of 0.1-0.5 MPa. Raising the inlet gas and inlet liquid pressure is respectively favorable to the reduction and uniformity of particle sizes.
出处
《动力工程学报》
CAS
CSCD
北大核心
2013年第6期466-471,共6页
Journal of Chinese Society of Power Engineering
基金
广东省科技资助项目(2011B090400289)
国家级大学生创新训练项目(20111056163)
关键词
湿法脱硫
液包气雾化喷嘴
流场特性
两相流
数值模拟
wet desulphurization
gas-outside liquid-inside atomizer
flow field characteristic
two-phaseflow
numerical simulation
