多孔介质-文丘里气泡发生器产气特性  

Gas production characteristics of a porous media-Venturi bubble generator

作　　者：蔡伟华 王玉航 张文超[1,5] 李少丹 刘鑫龙 蔡本安 王金成 CAI Weihua;WANG Yuhang;ZHANG Wenchao;LI Shaodan;LIU Xinlong;CAI Ben’an;WANG Jincheng(Laboratory of Thermo-fluid Science and Nuclear Engineering,School of Energy and Power Engineering,Northeast Electric Power University,Jilin 132012,Jilin,China;Wuhan Second Ship Design and Research Institute,Wuhan 430205,Hubei,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,Jiangxi,China;PetroChina Daqing Oilfield Limited Company,Daqing 163453,Heilongjiang,China;Key Laboratory of Advanced Reactor Engineering and Safety,Ministry of Education,Tsinghua University,Beijing 100084,China)

机构地区：[1]东北电力大学能源与动力工程学院热流科学与核工程实验室,吉林吉林132012 [2]武汉第二船舶设计研究院,湖北武汉430205 [3]华东交通大学土木工程与建筑学院,江西南昌330013 [4]中国石油大庆油田有限责任公司,黑龙江大庆163453 [5]清华大学先进堆工程与安全教育部重点实验室,北京100084

出　　处：《化工学报》2024年第10期3488-3497,共10页CIESC Journal

基　　金：国家自然科学基金青年基金项目(52206194);先进堆工程与安全教育部重点实验室项目(ARES-2023-09);吉林省教育厅科学研究计划项目(JJKH20240158KJ)。

摘　　要：将多孔介质发泡技术与文丘里气泡发生器相结合开发多孔介质-文丘里气泡发生器,以去离子水和空气为工质进行产气特性可视化实验研究,拍摄观察区域内气泡行为,分析多孔介质-文丘里气泡发生器产气规律,讨论水流量和气流量的影响规律。实验结果表明,与传统文丘里气泡发生器相比,在相同入口Reynolds数下,多孔介质-文丘里气泡发生器产生的气泡Sauter平均直径缩小25.3%~47.4%,标准差缩小24.4%~62.2%,说明改进的气泡发生器气泡Sauter平均直径更小,气泡粒径更均匀。水流量由5.01 m^(3)/h增大到14.98 m^(3)/h,多孔介质-文丘里气泡发生器产生的气泡Sauter平均直径由0.89 mm减小至0.29 mm,标准差由0.32 mm减小至0.085 mm;气流量由0.30 L/min增大到1.79 L/min,多孔介质-文丘里气泡发生器产生的气泡Sauter平均直径由0.33 mm增大到0.48 mm。说明水流量增大或气流量减小时,气泡发生器产生的气泡平均直径变小,气泡粒径分布更均匀。相关研究成果可为文丘里气泡发生器的优化提供新思路。Combining the porous media foaming technology with the Venturi bubble generator,a porous media-Venturi bubble generator is developed.Using deionized water and air as the working material,the experimental study on visualization of gas production characteristics is carried out.Photographs to observe the bubble behavior in the region,analyze the porous media-Venturi bubble generator gas production law,discuss the influence of water flow and air flow law.The experimental results show that,compared with the traditional Venturi bubble generator,under the same inlet Reynolds number,the Sauter mean diameter of bubble produced by the porous media-Venturi bubble generator was reduced by 25.3%-47.4%,and the standard deviation was reduced in the range of 24.4%-62.2%,which indicates that the Sauter mean diameter of bubble produced by the improved bubble generator is smaller,and the particle size of bubbles is more uniform.The water flow rate increased from 5.01 m^(3)/h to 14.98 m^(3)/h,the Sauter mean diameter of bubble produced by the porous media-Venturi bubble generator decreased from 0.89 mm to 0.29 mm,and the standard deviation decreased from 0.32 mm to 0.085 mm;the gas flow rate increased from 0.30 L/min to 1.79 L/min,the Sauter mean diameter of bubble produced by the porous media-Venturi bubble generator increased from 0.33 mm to 0.48 mm,indicating that the Sauter mean diameter of bubbles produced by the bubble generator became smaller and the particle size distribution of bubbles was more uniform when the water flow rate was increased or the gas flow rate was decreased.The results provide an idea for the optimization of the Venturi bubble generator.

关 键 词：多孔介质 文丘里管 气泡 气液两相流 

分 类 号：O35[理学—流体力学]