摘要
在液气组合雾化过程中,当雾化器上端存在正压时,易造成钢液堵塞,影响雾化的正常进行。本文采用数值模拟的方法,针对液气组合雾化中空气-水-模拟钢液3相流动过程展开研究。结果表明:在液气组合雾化过程中,水流入射夹角决定了雾化器上端抽吸正压力的存在;通过对比不同水流入射夹角下中心线上的空气流速和负压区域的大小,得到使该液气组合雾化过程达到最佳雾化效果的水流入射夹角为45.0～50.0°。
Normal pressure in atomization area will cause liquid steel jam and lead to abnormal atomization process. Using numerical simulation, the liquid-gas-liquid multiphase fluid flow was numerically studied by computational fluid dynamics（CFD） method in the process of atomization by combined liquid and gas flows. Results show that the existence of positive pressure depends on water injection angle. By comparing the gas velocity and negative pressure region for different water injection angles, the best atomization process will be achieved when water injection angle is between 45.0 - 50.0°.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2012年第6期403-409,共7页
Powder Metallurgy Technology
关键词
液气组合雾化
多相流动
计算流体力学
数值模拟
优化
atomization process by combined liquid and gas flows
multiphase flow
CFD
numerical simulation
optimization
