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Author:

Liu, Xianfei (Liu, Xianfei.) | Zhang, Hui (Zhang, Hui.) | Wang, Fang (Wang, Fang.) | Xia, Guodong (Xia, Guodong.) | Li, Zhiqiang (Li, Zhiqiang.) | Zhu, Caixia (Zhu, Caixia.) | Zhang, Haofei (Zhang, Haofei.)

Indexed by:

EI Scopus SCIE

Abstract:

The need to understand the flow behavior and film thickness in the single screw expander is very crucial since it is known to be a complex system due to the existence of various flow patterns. The present work reports a computational fluid dynamic analysis of two-phase flow behavior and film thickness through a vertical helical rectangular channel using the volume of fluid (VOF) model. The numerical model is validated against available experimental data of annular flow in the helical rectangular channel. The numerical predictions of velocity field, pressure field and liquid phase distribution are presented as each fluid flows into the helical channel. It is found that the inlet flow inclined angle has a significant influence on the liquid film distribution at the outer side of the helical channel. The effects of curvature ratio and dimensionless pitch on the liquid film distribution, film thickness and liquid holdup are illustrated in detail. In addition, the new relationship between the average liquid film thickness and the liquid holdup is also given, and these results are necessary for the optimization design of the single screw expander prototype.

Keyword:

Curvature ratio Liquid film thickness Dimensionless pitch Flow behavior Single screw expander

Author Community:

  • [ 1 ] [Liu, Xianfei]Zhongyuan Univ Technol, Zhengzhou 450007, Peoples R China
  • [ 2 ] [Zhang, Hui]Zhongyuan Univ Technol, Zhengzhou 450007, Peoples R China
  • [ 3 ] [Wang, Fang]Zhongyuan Univ Technol, Zhengzhou 450007, Peoples R China
  • [ 4 ] [Li, Zhiqiang]Zhongyuan Univ Technol, Zhengzhou 450007, Peoples R China
  • [ 5 ] [Zhu, Caixia]Zhongyuan Univ Technol, Zhengzhou 450007, Peoples R China
  • [ 6 ] [Zhang, Haofei]Zhongyuan Univ Technol, Zhengzhou 450007, Peoples R China
  • [ 7 ] [Xia, Guodong]Beijing Univ Technol, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Zhang, Hui]Zhongyuan Univ Technol, Zhengzhou 450007, Peoples R China;;[Wang, Fang]Zhongyuan Univ Technol, Zhengzhou 450007, Peoples R China

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Source :

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES

ISSN: 0020-7403

Year: 2021

Volume: 190

7 . 3 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:87

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 1

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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