文献类型：期刊文献

英文题名：A SIMPLE METHOD FOR IDENTIFYING BUBBLING/JETTING REGIMES TRANSITION FROM LARGE SUBMERGED ORIFICES USING ELECTRICAL CAPACITANCE TOMOGRAPHY (ECT)

作者：Cai, Qingbai[1];Shen, Xuesong[1];Shen, Chunyin[1];Dai, Gance[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：88

期号：3

起止页码：340

外文期刊名：CANADIAN JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20102413007749);WOS:【SCI-EXPANDED(收录号:WOS:000278666500006)】；

基金：The authors would like to thank Prof. Zhenmin Cheng, Dr Zibin Huang, Master Jiang'an Lan for their useful discussion and multiphase reaction laboratory in UNLAB of ECUST for providing the ECT device. The financial support by the National Hightech Research and Development Program of China (863 Program, 2007AA04Z159) is also gratefully acknowledged.

语种：英文

外文关键词：orifice diameter; transition regime; power spectra; electrical capacitance tomography (ECT)

摘要：The bubbling jetting transition regimes from large orifice submerged in water were investigated for various orifice diameters A simple and fast way for identifying the regime transition was successfully developed using electrical capacitance tomography (ECT) In all the experiments deionised water was liquid phase and air was gas phase Orifice gas velocity (V(N)) and orifice diameter (d(o)) were varied from 0 8 to 186 m/s and 4-21 mm, respectively It was found that the V(N,trans) strongly depends on the orifice diameter In the small orifice diameter (d(o) < 10 mm), V(N,trans) greatly decreases with the increase of orifice diameter However, in the large orifice diameter (d(o) > 10 mm), the effect of orifice diameter on the transition velocity is insignificant Finally, the data obtained by ECT compares with other works and the dimensionless orifice Reynolds number (Re(o) similar to 11,000) is preferred to identify the bubbling jetting transition regimes