摘要
为研究旋芯雾化喷嘴的喷放特性,通过建模仿真了单孔旋芯雾化喷嘴内流场及外流场,研究分析了内流场的雾化机理及外流场的雾滴分布特性,并结合实际喷放验证了仿真的准确性。研究表明:旋芯喷嘴喷放过程中能大幅度提高液体喷放速度,并在喷口处形成空穴,显著提高雾化效率;该喷嘴在低压下即可实现不大于80μm粒径的雾化,且粒径分布均匀。
In order to study the spraying characteristics of a single-hole rotary core atomizing nozzle,the flow field and outflow field of the single-hole rotary core atomizing nozzle were simulated by establishing the numerical model,and the atomizing mechanism of the internal flow field and the distribution characteristics of the droplets in the outflow field were analyzed.The accuracy of the simulation was verified combining with the actual spraying.The results showed that the liquid discharge velocity can be greatly increased during the discharge process of the rotary core nozzle,and a hole can be formed at the nozzle,which can significantly improve the atomization efficiency.At low pressure,the nozzle can atomize water with a particle size of no more than 80μm with uniform particle size distribution.
作者
羡学磊
马建琴
董海斌
刘连喜
盛彦锋
凌宗余
XIAN Xue-lei;MA Jian-qin;DONG Hai-bin;LIU Lian-xi;SHENG Yan-feng;LING Zong-yu(Tianjin Fire Science and Technology Research Institute of MEM,Tianjin 300381,China;Anhui L.Z Electromechanical Equipment Co.,Ltd.,Anhui Hefei 230031,China)
出处
《消防科学与技术》
CAS
北大核心
2020年第12期1709-1712,共4页
Fire Science and Technology
基金
应急管理部天津消防研究所基科费项目“固定灭火系统灭火技术及标准动态研究”(2018SJ15)。
关键词
旋芯
雾化喷嘴
仿真
rotary core
atomizing nozzle
simulation
