Investigation of two-phase flow regimes in square minichannels with different mixers created using additive technologies

Fedor Ronshin, Yuriy Dementyev, Dmitry Kochkin, Karapet Eloyan, Ivan Vozhakov

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, the effect of the junction angle on the Taylor flow regime characteristics was investigated. Using the Direct Light Processing method, minichannel mixers with different liquid and gas junction angles (from 30° to 150°) relative to the minichannel axis were manufactured. An experimental study of the two-phase flow formation was carried out, where Milli-Q® water was used as a working liquid, and high purity nitrogen was used as a working gas. A method of two-phase flow characteristic analysis using a high-speed shadow technique and automatic postprocessing was developed. Two-phase flow regimes were investigated in a wide range of gas and liquid flow rates. Size distribution of gas bubbles and liquid slugs and the distribution of bubble velocities were analyzed. The mechanisms of Taylor bubble formation and their characteristics, depending on the junction angle, were investigated.

Original languageEnglish
Article number110565
JournalExperimental Thermal and Fluid Science
Volume132
DOIs
Publication statusPublished - 1 Apr 2022

Keywords

  • Additive technologies
  • Flow characterization
  • Square minichannel
  • Taylor bubbles
  • Transitions between regimes
  • Two-phase flow

OECD FOS+WOS

  • 2.04 CHEMICAL ENGINEERING
  • 2.11 OTHER ENGINEERING AND TECHNOLOGIES
  • 2.03 MECHANICAL ENGINEERING

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