EFFECT OF GRAVITY ON PHASE DISTRIBUTION PATTERNS OF BUBBLY TWO-PHASE FLOW IN A VERTICAL MINI PIPE

被引：0
|
作者：
Watanabe, Shunichi [1 ]
Fukuhara, Yutaka [1 ]
Hazuku, Tatsuya [1 ]
Takamasa, Tomoji [1 ]
Hibiki, Takashi
机构：
[1] Tokyo Univ Marine Sci & Technol, Fac Marine Technol, Koto Ku, Tokyo 1358533, Japan
来源：
PROCEEDINGS OF THE 18TH INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING 2010, VOL 2 | 2011年
关键词：
INTERFACIAL AREA; VELOCITY; TURBULENCE;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In relation to the development of the interfacial area transport equation, a precise database of the axial development of void fraction profile, interfacial area concentration and Sauter mean bubble diameter in an adiabatic nitrogen-water bubbly flow in a 5 mm-diameter mini pipe was constructed for normal and microgravity conditions using stereo image-processing. The flow measurements were performed at four axial locations (axial distance from the inlet normalized by the pipe diameter, z/D = 5.5, 34, 72 and 110) and with various flows: superficial gas velocity of 0.00434-0.0420 m/s, and superficial liquid velocity of 0.239-0.949 m/s. The effect of gravity on radial distribution of bubbles and the axial development of two-phase flow parameters is discussed in detail based on the obtained database and visual observation.
引用
收藏
页码：657 / 664
页数：8
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