| Title |
Effect of Various Shapes of Mixer Geometry on Two-Phase Flow Patterns in a Micro-Channel |
| Authors |
Kwan Geun Lee ; Jun Kyoung Lee ; Taehyun Park ; Gyo Nam Kim ; Eun Ju Park |
| DOI |
http://dx.doi.org/10.6110/KJACR.2015.27.2.075 |
| Keywords |
미세관 ; 혼합기 ; 이상유동 ; 유동양식 Micro-channel ; Mixer ; Two-phase flow ; Flow Pattern |
| Abstract |
The effect of inlet mixer geometries on the two-phase flow patterns in square micro-channel with 600×600 ㎛ was investigated experimentally in this paper. The 4 different mixer configurations based on the Y, Impacting, and two T types (gas and liquid inlets were switched) were used. The test fluids were nitrogen and water. The liquid and gas superficial velocities were 0.01～10 m/s and 0.1～100 m/s, respectively. Several distinctive flow patterns, namely, annular, slug-annular, slug, slug-bubbly, bubbly, and churn flow could be seen. The flow pattern maps for each mixer were suggested, and it can be concluded that two-phase flow patterns are not very sensitive to the mixer geometries. But the mixing behaviors of gas and liquid for each mixer were different for slug and bubbly flow. Thus, the characteristics of slug and bubble for each case were not same. |