CIESC Journal

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垂直管中管径突变对空气-水两相流流型的影响(Ⅱ)突扩接头

杨英珍;李广军; 周芳德; 陈学俊   

  1. The State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University,
    Xi’an 710049, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2001-06-28 发布日期:2001-06-28
  • 通讯作者: 杨英珍

The Effect of Sudden Change in Pipe Diameter on Flow Patterns of Air-Water Two-Phase Flow in
Vertical Pipe (Ⅱ) Sudden-Expansion Cross-Section

YANG Yingzhen; LI Guangjun; ZHOU Fangde; CHEN Xuejun   

  1. The State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University,
    Xi’an 710049, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2001-06-28 Published:2001-06-28
  • Contact: YANG Yingzhen

摘要: In this companion paper, flow patterns in the upstream and downstream tubes of a sudden-
expansion cross-section (SECS) in a vertical straight pipe were presented. The effect of
SECS on flow patterns upstream and downstream was analyzed by comparing with flow patterns
in uniform cross-section vertical tubes. It is found the effect is great. There exist great
instabilities of two-phase flow in the neighboring areas of the SECS both downstream and
upstream.

关键词: gas-liquid two-phase flow;flow pattern;sudden-expansion crces-section

Abstract: In this companion paper, flow patterns in the upstream and downstream tubes of a sudden-
expansion cross-section (SECS) in a vertical straight pipe were presented. The effect of
SECS on flow patterns upstream and downstream was analyzed by comparing with flow patterns
in uniform cross-section vertical tubes. It is found the effect is great. There exist great
instabilities of two-phase flow in the neighboring areas of the SECS both downstream and
upstream.

Key words: gas-liquid two-phase flow, flow pattern, sudden-expansion crces-section