Mechanistic study on interfacial area concentration profile of vertical two-phase flow in large circular pipe

SUN Bo; SUN Licheng; XING Dianchuan; LIU Jingyu; TIAN Daogui

doi:10.3969/j.issn.0438-1157.2012.12.011

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Mechanistic study on interfacial area concentration profile of vertical two-phase flow in large circular pipe

更新时间：2025-12-10

- Mechanistic study on interfacial area concentration profile of vertical two-phase flow in large circular pipe
- CIESC Journal Issue 12, Pages: 3812-3818(2012)
- 作者机构：
  
  哈尔滨工程大学核安全与仿真技术国防重点学科实验室,黑龙江,哈尔滨,150001
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.12.011
  CLC： L334
- Online First：07 August 2012，
  
  Published：07 August 2012
- 稿件说明：
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SUN Bo, SUN Licheng, XING Dianchuan, et al. Mechanistic study on interfacial area concentration profile of vertical two-phase flow in large circular pipe[J]. CIESC Journal, 2012, (12): 3812-3818.
DOI：

SUN Bo, SUN Licheng, XING Dianchuan, et al. Mechanistic study on interfacial area concentration profile of vertical two-phase flow in large circular pipe[J]. CIESC Journal, 2012, (12): 3812-3818. DOI： 10.3969/j.issn.0438-1157.2012.12.011.

摘要

采用光纤探针测量方法对垂直上升管中空气-水两相泡状流界面分布特性进行了研究。实验选用的圆管直径为100 mm

气相、液相表观速度的范围分别为 0~0.1 m·s-1和0~1.0 m·s-1。获得了界面面积浓度(IAC)、截面含气率、气泡直径等分布规律。通过气泡的受力分析

发现升力和湍流扩散力的综合作用导致了气泡的径向运动

而且升力对径向IAC分布的影响占主导地位;当气泡直径超过临界尺寸(5.7 mm)后

升力系数变为负值

使得升力指向管中心

进而导致了IAC分布由壁峰型向核峰型分布的转变。

Abstract

Characteristics of interface distribution in air-water two-phase bubbly flow in a vertical pipe was experimentally investigated by using the measurement method of optical fiber probes.The inner diameter of the circular pipe was 100 mm

and superficial gas and liquid velocities ranged from 0 to 0.1 m穝-1 and from 0 to 1.0 m穝-1

respectively.Local distributions of the interfacial area concentration(IAC)

void fraction and bubble diameter were obtained.By analyzing the forces on a bubble

it was found that lift force and turbulent dispersion force determined the radial motion of bubbles

and the former dominated the radial profile of IAC.When the bubble diameter exceeded the critical size of 5.7 mm

the distribution of IAC would change from wall peak to core peak resulting from the lift force pointing to the pipe center due to lift force coefficient changing from positive to negative.

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