Characterizing initiation of gas–liquid churn flows using coupling analysis of multivariate time series

Lusheng Zhai, Yinglin Wu, Jie Yang and Hailin Xie

Physica A: Statistical Mechanics and its Applications, 2020, vol. 540, issue C

Abstract: Gas–liquid two-phase flows are frequently encountered in industrial processes, such as chemical and nuclear engineering. Understanding the transition mechanism from slug to churn flow is essential to avoid flooding of separators, system vibration and production line damage. In this study, we designed a direct-image multi-electrode conductance sensor to detect spatial structures of gas–liquid two-phase flows. The collected multivariate signals from gas–liquid flow system are analyzed using multivariate weighted multiscale permutation entropy (MWMPE) and cross recurrence plot (CRP). The derived cross recurrence rate (CRR) exhibits advantages in indicating the flow structure evolution. Comparatively, MWMPE is more sensitive to anomalous changes of the flow structures and can be employed to indicate the flow pattern transition from slug to churn flow.

Keywords: Gas–liquid two-phase flow; Multivariate weighted multiscale permutation entropy; Cross recurrence plot; Churn flow (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437119317480
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:540:y:2020:i:c:s0378437119317480

DOI: 10.1016/j.physa.2019.123099

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().