气-液两相流喷嘴内部流场仿真及参数优化  

Simulation of Internal Velocity Field in Nozzle for Two-Phase Gas-Liquid Flow and Parameter Optimization

作　　者：张朋 史铭 闫泽鹏 李明瑞 王瑛 葛正斌 Zhang Peng;Shi Ming;Yan Ze-peng;Li Ming-rui;Wang Ying;Ge Zheng-bin

机构地区：[1]金川集团矿山工程分公司 [2]北京科技大学土木工与资源工程学院

出　　处：《金川科技》2024年第1期1-7,14,共8页Jinchuan Science and Technology

摘　　要：为提高矿山井下防尘技术,优化喷雾雾化效果及除尘能力,本文依据实际参数建立了喷嘴的物理模型进行了数值模拟。结果表明:气体进入混合腔后会形成回旋气流从而与液体发生碰撞,产生一次破碎雾化效果,而喷嘴的喷出口较小导致喷雾口流速极大形成对水雾的二次破碎效果,有助于降低喷雾粒度;气压增大,喷嘴中部的速度场逐渐呈现出涡旋的状态,有助于提高雾化效果;水压增大,大部分的水由出水口进入混合腔后直接由喷嘴出口喷出,对喷嘴的雾化效果起到消极作用。To improve the underground mine dust control technology and optimize the spray atomization effect and dust removal capacity,a physical model of the nozzle based on the actual parameters for simulation testing is established.The results show that:the gas into the mixing chamber will form a cyclonic airflow and collides with the liquid,resulting in a broken atomization effect.The smallness of nozzle outlet brings a large velocity of spray nozzle causing a secondary broken effect on the water mist,which helps to reduce the spray particle size;when air pressure increases,the velocity field in the middle of the nozle gradually showing a vortex state,which helps to improve the atomization effect;when water pressure increases,most of the water spray from nozzle after entering the mixing chamber,which has a negative effect on the atomization effect of the nozzle.

关 键 词：喷雾 雾化效果 数值模拟 

分 类 号：G63[文化科学—教育学]