化工学报 ›› 2008, Vol. 59 ›› Issue (4): 851-858.

• 多相流和计算流体力学 • 上一篇    下一篇

油水两相流流型混沌吸引子形态特性

宗艳波;金宁德;马文衡;张玮;吕剑   

  1. 天津大学电气与自动化工程学院,天津 300072;华北油田采油工艺研究院,河北 任丘 062552
  • 出版日期:2008-04-05 发布日期:2008-04-05

Chaotic attractor morphological characteristics of oil-water two-phase flow pattern

ZONG Yanbo;JIN Ningde;MA Wenheng;ZHANG Wei;LV Jian   

  • Online:2008-04-05 Published:2008-04-05

摘要:

基于在垂直上升管中采集到的61组油水两相流电导波动信号,通过在混沌吸引子域中放置参考截面方法,考察了混沌吸引子形态特征量与油水两相流流型转变之间的关系,发现水包油流型在3阶及4阶吸引子矩特征量平面上分布相对稳定,而过渡流型在3阶吸引子矩特征量平面上呈不规则剧烈变化,在4阶吸引子矩特征量平面上呈线性变化。研究结果表明,油水两相流混沌吸引子形态特征量对流型转化敏感,有助于理解油水两相流流型转化的非线性动力学机制。

关键词:

油水两相流, 流型转化, 吸引子形态

Abstract:

Based on 61 groups of conductance fluctuating signals in vertical upward oil-water two-phase flow,the relationship between chaotic attractor morphological characteristics and oil-water two-phase flow pattern transition was investigated by placing reference sections in the chaotic attractor field.The oil-in-water flow pattern was steadily distributed in the third-order and fourth-order attractor moment planes,while transitional flow pattern changed irregularly sharply in the third-order attractor moment plane,but changed linearly in the fourth-order attractor moment plane.The study showed that the chaotic attractor morphological of oil-water two-phase flow was sensitive to flow pattern transition,and it was helpful to understanding the nonlinear dynamic mechanism of oil-water flow pattern transition.

Key words:

油水两相流, 流型转化, 吸引子形态