Effect of flow channel inclination on void fraction for downward two-phase flows

Chuanshuai Dong; Takashi Hibiki

doi:10.1063/5.0161988

Effect of flow channel inclination on void fraction for downward two-phase flows

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Overview

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Author(s)

Chuanshuai Dong
Takashi Hibiki

Related Research Unit(s)

Department of Mechanical Engineering

Detail(s)

Original language	English
Article number	083326
Journal / Publication	Physics of Fluids
Volume	35
Issue number	8
Online published	22 Aug 2023
Publication status	Published - Aug 2023

Link(s)

DOI	DOI https://doi.org/10.1063/5.0161988 Final Published version
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Attachment(s)	Documents 168629531.pdf Final Published version, 5.81 MB, PDF Publisher's Copyright Statement COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Dong, C., & Hibiki, T. (2023). Effect of flow channel inclination on void fraction for downward two-phase flows. Physics of Fluids, 35(8), Article 083326 and may be found at https://doi.org/10.1063/5.0161988.
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85169819248&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(6deecdc5-e5b5-447a-97fc-ad53dcfadf7f).html

Abstract

The drift-flux model (DFM) is of practical importance for analyzing gas-liquid flow in various applications, such as chemical reactors and nuclear power plants. This paper aims at developing an accurate flow-regime-independent DFM for estimating the void fractions of two-phase downward inclined flow. The effect of flow channel inclination on void fraction for downward two-phase flows was investigated comprehensively. First, 2868 data for void fractions of gas-liquid two-phase flows were summarized from 12 sources. The inclination angle ranged from 0° to 90°. Then, the existing drift-flux models were reviewed comprehensively. The existing models had poor predictive performance in terms of the whole experimental database. Therefore, a theoretically supported drift-flux model for downward inclined two-phase flow was established based on a deeper understanding of two-phase flow behavior. The influence of channel inclination angles on the distribution parameters and drift velocities was determined quantitatively. A total of 87.8% of estimated void fractions were within ±20% errors of experimental void fractions. The mean relative deviation, m_d, was −2.04%. © 2023 Author(s).