Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4993697 | International Journal of Heat and Mass Transfer | 2017 | 12 Pages |
Abstract
An experimental investigation was conducted to study the effect of header and channels orientations on the two-phase flow distribution in parallel micro-channels. The parallel micro-channels was composed of a header with hydraulic diameter of 0.667Â mm and three parallel channels with hydraulic diameter of 0.500Â mm, all with rectangle cross sections. Nitrogen and 0.03Â wt% sodium dodecyl sulfate (SDS) solution were used as the test working fluids. The inlet superficial velocities of gas and liquid varied from 0.200 to 16.0Â m/s and from 0.0246 to 0.650Â m/s, respectively. The fluid dynamics of two-phase flow splitting in parallel micro-channels was captured by high speed recording technique and three flow patterns were observed at the inlet. It was found that the phase distribution characteristics of two-phase flow in parallel channels highly depended on the inlet flow patterns and the orientations of header and channels. For slug flow, a uniform phase distribution was achieved in horizontal header with vertically downward channels, whereas the distribution of slug-annular flow was improved in vertically upward header and horizontal channels. For annular flow, two-phase inhomogeneous distribution reached the highest when the header was vertically downward.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Yanchu Liu, Wanchun Sun, Wei Wu, Shuangfeng Wang,