Effects of Swirler Shape on Swirling Annular flow in a Gas-Liquid Separator
A downscaled model of a steam separator is used to experimentally examine the effects of swirler shape. Several swirlers having different vane angles, different hub diameters, and different number of vanes are installed in the separator. Flow patterns, the ratio of the separated liquid flow to the total liquid flow, liquid film thickness, and pressure drop are measured to understand the effects of swirler shape on the two-phase swirling annular flow. An improved swirler, which has a small hub diameter, the decreased number of vanes, and modified vane shape is also designed, and its performance is examined. As a result, the following conclusions are obtained. (1) The smaller the vane angle is, the less the separator performance is. This is due to the decrease in the centrifugal force, I.e., the decrease in the amount of droplet deposition. (2) The reduction of the hub diameter and the number of vanes do not cause the decrease in the separator performance. (3) The improved swirler effectively reduces the pressure drop while keeping high separator performance.
Steam separator Swirling flow Pressure drop Liquid film
Hironobu Kataoka Toshiki Matsubayashi Yusuke Shinkai Akio Tomiyama
Kobe University Rokkodai-cho 1-1, Nada, Kobe, Hyogo 657-8501, Japan
国际会议
上海
英文
654-665
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）