2016年9月1日
Experimental study of bubbly swirling flow in a vertical tube using ultrasonic velocity profiler (UVP) and wire mesh sensor (WMS)
Journal of Mechanical Science and Technology
- ,
- ,
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- 巻
- 30
- 号
- 9
- 開始ページ
- 3897
- 終了ページ
- 3905
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s12206-016-0801-6
Two-phase air-water bubbly swirling flow through a pipe is a complex turbulent flow and its prediction is still challenging. The present paper describes the experimental investigation of the air-water bubbly swirling flow in vertical co-current flow. Swirling flow is induced by a twisted tape in a 20 mm inner diameter pipe. The flow is investigated using Ultrasonic velocity profiler (UVP), which allows the measurement of liquid and gas velocities simultaneously. Furthermore, simultaneous measurement of void fraction is performed using Wire mesh sensor (WMS). The experimental results reveal that swirling flow has significant impact on bubbles’ distribution. In low liquid flow rate, the average bubble velocity is fairly uniform along the radial position and void fraction increases in the near wall region. However, increasing liquid flow rate at constant gas flow rate leads to increase in void fraction in the core region, this is mainly due to drift velocity which is affected by centrifugal force. Experimental findings and parametric trends based on the effects of swirling flow are summarized and discussed.
- リンク情報
- ID情報
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- DOI : 10.1007/s12206-016-0801-6
- ISSN : 1738-494X
- SCOPUS ID : 84988472808