化学工程2011，Vol.39Issue(1)：49-52,4.
二相绕流流动特性的相关性和复杂性分析
Analysis on correlation and complexity of gas-liquid two-phase flow characteristics
洪文鹏 1刘燕1
作者信息
- 1. 东北电力大学,能源与动力工程学院,吉林,吉林,132012
- 折叠
摘要
Abstract
The correlation and complexity of gas-liquid two-phase flow pattern in in-line tube bundles were investigated. Two-phase flow characteristics across tube bundle were analyzed. Three complexity measures were extracted, including cross-correlation coefficient, fractal box dimension, and Shannon information entropy from flow pattern image signals of gas-liquid two-phase flow in two pitch tube bundles by using digital high speed video systems. Based on the above studies, the chaos dynamic characteristics of three complexity measures with gas superficial velocity and the recognition capability of gas-liquid two-phase flow pattern were analyzed. The experimental results indicate that the three complexity measures were sensitive to the flow pattern transition; through analyzing the rules of three complexity measures with the changes of gas superficial velocity, the dynamics structure of gas-liquid two-phase flow in tube bundle can be obtained, thus providing an efficient, supplementary assistant tool to reveal the flow pattern evolution mechanism of gas-liquid two-phase flow and quantitatively identify flow pattern.关键词
气液二相流/管束/互相关系数/分形盒维数/Shannon信息熵Key words
gas-liquid two-phase flow/ tube bundle/ cross-correlation coefficient/ fractal box dimension/ Shannon information entropy分类
数理科学引用本文复制引用
洪文鹏,刘燕..二相绕流流动特性的相关性和复杂性分析[J].化学工程,2011,39(1):49-52,4.
