Detecting gas–liquid two-phase flow pattern determinism from experimental signals with missing ordinal patterns

Meng Du* (Corresponding Author), Lei Zhang, Xiangyang Niu, Celso Grebogi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Downloads (Pure)

Abstract

To address the issue of whether there exists determinism in a two-phase flow system, we first conduct a gas–liquid two-phase flow experiment to collect the flow pattern fluctuation signals. Then, we investigate the determinism in the dynamics of different gas–liquid flow patterns by calculating the number of missing ordinal patterns associated with the partitioning of the phase space. In addition, we use the recently proposed stretched exponential model to reveal the flow pattern transition behavior. With the joint distribution of two fitted parameters, which are the decay rate of the missing ordinal patterns and the stretching exponent, we systematically analyze the flow pattern evolutional dynamics associated with the flow deterministic characteristics. This research provides a new understanding of the two-phase flow pattern evolutional dynamics, and broader applications in more complex fluid systems are suggested.
Original languageEnglish
Article number093102
Number of pages9
JournalChaos
Volume30
Issue number9
Early online date1 Sep 2020
DOIs
Publication statusPublished - Sep 2020

Keywords

  • PARTICLE IMAGE
  • SLUG FLOW
  • IDENTIFICATION
  • DEPENDENCE
  • PRESSURE
  • MODEL

Fingerprint Dive into the research topics of 'Detecting gas–liquid two-phase flow pattern determinism from experimental signals with missing ordinal patterns'. Together they form a unique fingerprint.

Cite this