Chaotic Characteristic Analysis of Oil-air-water Three-phase Flow in Vertical Upward Pipe Based on Image Grayscale Signals
Using number 35 lubricants, air and running water as experimental mediums, high-speed camera is applied to get dynamic images of the 6 typical flows for the oil-air-water three-phase flow in vertical upward pipe. Grayscale average values of each frame images are extracted to form the time series. Based on the values, the chaotic characteristic is analyzed. The autocorrelation function is applied to calculate the delay time, and simultaneously the attractor and chaos associated and HURST Exponent are also used to analyze the formation mechanisms of the flow patterns for the oil-air-water three-phase flow. The experimental result draws to the conclusion: the image grayscale signals of the oil-air-water threephase flow in vertical upward pipe have chaotic characteristic, by which the several typical flow patterns of three-phase flow can be fully represented.
oil-air-water three-phase grayscale signals chaotic characteristic chaotic attractor chaos associated HURST index
H.W.Li Y.L.Zhoi
College of Automatic Engineering, Northeast Dianli University, China College of Energy Resource and Mechanical Engineering, Northeast Dianli University, China
国际会议
西安
英文
483-488
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）