Spatiotemporal Structure Analysis on a Bubbly Jet Flow by using POD
Bubbly flows are complicated flows because bubbles are deformable and the bubblc-bubble interactions act in local area among a lot of bubbles. Such flow in liquid phase disturbed by each bubble is called pseudo turbulence. A PIV is most effective tool to measure such bubbly flow because of multi-dimensional measurement and simultaneous acquisition of a lot of bubbles and surrounding flow. Recently Dynamic PIV system consisted of high-speed camera and highrepetition laser is developed, and it is possible to capture time-serial images with higher resolution. In this paper, these liquid phase velocities near jet inlet are calculated by PTV and rearrangement method, and then we show some spatio-temporal characteristic analyzed by POD (Proper Orthogonal Decomposition) method.
Bubble Jet Flow Dynamic PIV PTV POD
Masaaki ISHIKAWA Kunio IRABU Isao TERUYA Munehiro NITTA
University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
国际会议
The 7th International Symposium on Measurement Techniques for Multiphase Flows(第七届国际多相流测试技术会议)
天津
英文
18-25
2011-09-17（万方平台首次上网日期，不代表论文的发表时间）