文献类型：期刊文献

英文题名：Effect of nozzle diameter on bubble generation with gas self-suction through swirling flow

作者：Xu, Xiao[1];Ge, Xiaoling[1];Qian, Yundong[1];Zhang, Bohan[1];Wang, Hualin[2];Yang, Qiang[3]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2018

卷号：138

起止页码：13

外文期刊名：CHEMICAL ENGINEERING RESEARCH & DESIGN

收录：;EI(收录号：20183405739116);WOS:【SCI-EXPANDED(收录号:WOS:000448224800002)】；

基金：The authors wish to express their sincere gratitude to the National Natural Science Foundation of China (51678238, 51722806) and Shanghai Rising-Star Program (16QA1401200) for financial support.

语种：英文

外文关键词：TWo-phase flow; Bubble generator; Vortex chamber; Size distribution

摘要：Understanding the effects of nozzle geometry on bubble generation is very important in nozzle design. Gas self-suction is discussed with different nozzle diameter by detecting the pressure at gas inlet. The effects of nozzle diameter on the bubble size distribution and spray morphology of bubble generators were investigated to assess the aeration capabilities. The increase in the geometric criterion K from 3.2 to 4.8 leads to an amazing transformation from non-self-suction to the maximum vacuum degree. The maximum vacuum degree with a geometric criterion K of 4.8, the maximum aeration capability with a K of 8.0, and the minimum bubble diameter with a K of 12 were achieved. The liquid handling capacity and spray angle increase together with increasing K. This work contributes to the foundation for the design of an industrial bubble generator through a pressure-swirl nozzle. (C) 2018 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.