Measuring Flow Pattern Asymmetry of Oil-Water Two Phase Flows Using Multi-channel Rotating Electric Field Conductance Signals

作者：He, Yuansheng; Ren, Yingyu^*; Han, Yunfeng; Jin, Ningde

来源：Zeitschrift fur Naturforschung Section A-A Journal of Physical Sciences, 2019, 74(1): 25-41.

DOI：10.1515/zna-2018-0312

• Flow Pattern Asymmetry
• Multi-channel Conductance Signals
• Multi-scale First-Order Difference Analysis
• Multi-scale Time Asymmetry

The present study is a report on the asymmetry of dispersed oil phase in vertical upward oil-water two phase flow. The multi-channel signals of the rotating electric field conductance sensor with eight electrodes are collected in a 20-mm inner diameter pipe, and typical images of low pattern are captured using a high speed camera. With the multi-channel rotating electric field conductance signals collected at pipe cross section, multi-scale time asymmetry (MSA) and an algorithm of multi-scale first-order difference scatter plot are employed to uncover the fluid dynamics of oil-water two phase flow. The results indicate that MSA can characterise the nonlinear behaviours of oil-water two phase flow. Besides, the MSA analysis also beneficial for understanding the underlying inhomogeneous distribution of the flow pattern in different directions at pipe cross section.

• 出版日期2019-1
• 单位天津大学