主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (6): 803-806.

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不同压力下细水雾雾场特征参量模拟研究

陈庆1 ,魏旭1 ,陈光2 ,王志刚2 ,李广军2 ,陈鹏3   

  1. (1. 国网江苏省电力有限公司,江苏 南京 210024;2. 国网电力科学研究院有限公司,江苏 南京 2111063;3. 中国矿业大学(北京)应急管理与安全工程学院,北京 100086)
  • 收稿日期:2020-01-23 出版日期:2020-06-15 发布日期:2020-06-15
  • 通讯作者: 陈鹏(1971—),男,中国矿业大学(北京)工业安全与职业危害研究所副所长。
  • 作者简介:陈庆(1962—),男,江苏徐州人,国网江苏省电力有限公司研究员级高级工程师,博士,主要从事智能运检、电力系统继电保护研究,江苏省南京市上海路 215号,211106。
  • 基金资助:
    国家电网公司科技项目“大型充油设备泡沫细水雾涡扇炮智能灭火技术研究与应用”(SGTYHT/18-JS-206)

Research on the atomization characteristics of fine water under different pressure

CHEN Qing1, WEI Xue1,CHEN Guang2, WANG Zhi-gang2, LI Guang-jun2, CHEN Peng3   

  1. (1.State Grid Jiangsu Electric Power Co., Ltd., Jiangsu Nanjing 210024, China; 2.State Grid Electric Power Research Institute Co., Ltd., Jiangsu Nanjing 211106, China; 3. School of Emergency Management and Safety Engineering, China University of Mining and Technology-Beijing, Beijing 100086, China)
  • Received:2020-01-23 Online:2020-06-15 Published:2020-06-15

摘要: 为研究细水雾雾场特性,定量分析压力对细水雾雾场特征参数的影响,利用计算流体动力学软件 Fluent 对不同压力下细水雾雾场的粒径分布、速度分布、浓度分布等进行数值分析,利用高速摄像技术和激光粒度分析技术对细水雾雾场特征参数的模拟研究进行实验验证。结果表明:流体从喷嘴喷射到连续相空气中后,喷雾形态均保持为圆锥形。细水雾外部流场速度在截面中心处最大,向边缘处逐渐减小。喷头正下方粒子数量最多,随着距喷头水平距离的增加,粒子数量逐渐减小。

关键词: 细水雾, 雾化特性, 数值模拟, 工作压力, 雾场形态

Abstract: In order to study the atomization characteristics of water mist and analyze the influence of pressure on the characteristic parameters of water mist field quantitatively, computational fluid dynamics software FLUENT was used to analyze the particle size distribution, velocity distribution and concentration distribution of water mist field under different pressure.High- speed camera technology and laser particle size analysis technology were used to verify the simulation research of the characteristic parameters of water mist field. The results showed that after the fluid was injected into the continuous phase air from the nozzle, the spray pattern remained conical. The velocity of the external flow field of the water mist in the center of the section was the largest, and decreased gradually to the edge. The number of particles under the nozzle was the largest. With the increase of the horizontal distance from the nozzle, the number of particles decreased gradually.

Key words: fine water mist, atomization characteristics, numerical simulation, working pressure, fog field morphology

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