Flow Regimes in Bubble Columns with and without Internals: A Review  

作　　者：Ayat N.Mahmood Amer A.Abdulrahman Laith S.Sabri Abbas J.Sultan Hasan Shakir Majdi Muthanna H.Al-Dahhan 

机构地区：[1]Department of Chemical Engineering,University of Technology-Iraq,Baghdad,Iraq [2]Chemical and Petroleum Industries Engineering Department,Al-Mustaqbal University College,Babylon,Iraq [3]Department of Chemical and Biochemical Engineering,Missouri University of Science and Technology,Rolla,USA

出　　处：《Fluid Dynamics & Materials Processing》2024年第2期239-256,共18页流体力学与材料加工（英文）

摘　　要：Hydrodynamics characterization in terms offlow regime behavior is a crucial task to enhance the design of bubble column reactors and scaling up related methodologies.This review presents recent studies on the typicalflow regimes established in bubble columns.Some effort is also provided to introduce relevant definitions pertaining to thisfield,namely,that of“void fraction”and related(local,chordal,cross-sectional and volumetric)variants.Experimental studies involving different parameters that affect design and operating conditions are also discussed in detail.In the second part of the review,the attention is shifted to cases with internals of various types(perfo-rated plates,baffles,vibrating helical springs,mixers,and heat exchanger tubes)immersed in the bubble columns.It is shown that the presence of these elements has a limited influence on the global column hydrodynamics.However,they can make the homogeneousflow regime more stable in terms of transition gas velocity and transi-tion holdup value.The last section is used to highlight gaps which have not beenfilled yet and future directions of investigation.

关 键 词：HYDRODYNAMICS flow regime bubble column heat-exchanging internals 

分 类 号：O35[理学—流体力学]