Differential pressure fluctuation of isothermal two-phase flow and flow pattern identification

被引：0
|
作者：
Ito, Koji [1 ]
Miyazaki, Daisuke [1 ]
Shoji, Masahiro [1 ]
机构：
[1] Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
来源：
| 2002年 / Japan Society of Mechanical Engineers卷 / 68期
关键词：
Bubbles (in fluids) - Flow patterns - Interfaces (materials) - Pipe - Pressure measurement;
D O I：
10.1299/kikaib.68.2079
中图分类号：
学科分类号：
摘要：
The experiment of air-water isothermal two-phase flow in a vertical pipe was conducted by paying attention to the dynamic characteristics of flow pattern and its transition. Differential pressure fluctuation for bubble, slug, churn and annular flow were measured, and nonlinear characteristics of the flow were analyzed through the return maps on which the extreme values of the differential pressure fluctuation were plotted. It is found from the results that the distribution of the data points on the map differs markedly depending on the flow patterns. The characteristics of the flow configurations provide a criterion and a new identification method of flow patterns.
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