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Experimental study on the flow pattern and pressure gradient of air-water two-phase flow in a horizontal circular mini-channel

查看全文 作　　者：[1,3]Sudaija;Aqli [1]Haq;[1,2]Deendarlianto;[1,2]Indarto;Adhika [1,2]Widyaparaga 高影响力作者 机构地区：[1]Departement of Mechanical and Industrial Engineering,Gadjah Mada University,Yogyakarta,Indonesia;[2]Centre for Energy Studies,Gadjah Mada University,Sekip K-1A Kampus UGM,Yogyakarta,Indonesia;[3]Departement of Mechanical Engineering,Universitas Muhammadiyah Yogyakarta,Yogyakarta,Indonesia高影响力机构 出　　处：《Journal of Hydrodynamics》索引2019年第31卷第1期,共15页高影响力期刊 摘　　要：Experimental studies on the flow pattern and the pressure gradient of gas-liquid co-current two-phase flow in a mini-channel were conducted.The test section was a transparent circular channel of 1.6 mm inner diameter.The working fluids were air and water.The superficial velocities of gas and liquid were in the range of 0.025-66.300 m/s and 0.033-4.935 m/s,respectively.In the present work,the flow pattern and the pressure gradient data were obtained by analyzing the flow images captured by a high-speed camera,and by using the pressure transducer,respectively.As a result,it was found that (1) the obtained flow patterns were bubbly,plug,slug-annular,annular,and chum flows,(2) new experimental correlations on the bubble and plug lengths were proposed,whereas the lengths are the function of the homogeneous void fraction,(3) both gas and liquid superficial velocities affect proportionally to the pressure gradient,whereas it increases with the increase both of JG,JL.In addition,the obtained flow patterns are in a good agreement with that of the available flow pattern maps in the open literatures,such as,Triplett et al.(1999) and Chung and Kawaji (2004). 关 键 词：TWO-PHASE FLOW mini channel FLOW pattern pressure GRADIENT plug length
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