Numerical simulation of flow pattern transition for gas-liquid two-phase flow in helical square ducts

ZHOU Yunlong; ZHANG Liyan

doi:10.3969/j.issn.0438-1157.2014.12.017

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Numerical simulation of flow pattern transition for gas-liquid two-phase flow in helical square ducts

更新时间：2025-12-10

- Numerical simulation of flow pattern transition for gas-liquid two-phase flow in helical square ducts
- CIESC Journal Issue 12, Pages: 4767-4774(2014)
- 作者机构：
  
  东北电力大学能源与动力工程学院,吉林市,吉林省,132012
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.12.017
  CLC： K121
- Online First：05 December 2014，
  
  Published：05 December 2014
- 稿件说明：
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ZHOU Yunlong, ZHANG Liyan. Numerical simulation of flow pattern transition for gas-liquid two-phase flow in helical square ducts[J]. CIESC Journal, 2014, (12): 4767-4774.
DOI：

ZHOU Yunlong, ZHANG Liyan. Numerical simulation of flow pattern transition for gas-liquid two-phase flow in helical square ducts[J]. CIESC Journal, 2014, (12): 4767-4774. DOI： 10.3969/j.issn.0438-1157.2014.12.017.

摘要

采用CLSVOF(coupled level set and volume of fluid method)方法

以空气和水为介质对矩形截面螺旋管内气液两相流动进行数值模拟

气相折算速度UG为0.1～2.5 m·s-1

液相折算速度UL为0.09～4.5 m·s-1.研究螺旋直径、螺旋升角对流型转换边界的影响

并绘制了不同螺旋直径、不同螺旋升角下的流型图.数值结果表明

与传统VOF方法相比

CLSVOF可以得到更精确的相界面;随着螺旋升角的增加

塞状流向泡状流的转换边界向UL减小的方向进行

但是幅度很小

塞状流向弹状流的转换边界向UL减小的方向进行;随着螺旋直径的增加

塞状流向泡状流的转换边界向UL减小的方向进行

塞状流向弹状流的转换边界向UL减小、UG增大的方向进行;与Murai流型图相比

流型转换边界有所差异.

Abstract

A numerical analysis of air-water two-phase flow characteristics in helical square ducts was made using the CLSVOF (coupled level set and volume of fluid) multiphase model. The range of gas superficial velocity was 0.1—2.5 m·s-1

and liquid superficial velocity was 0.09—4.5 m·s-1. An investigation of effects of curvature diameter and helix angle on flow pattern transition was made. The air-liquid two-phase flow pattern map was drafted under different flow conditions. Compared with the traditional interface tracking method

the CLSVOF method could get a more accurate gas-liquid interface. With helix angle increasing

the conversion boundary from plug flow to bubbly flow moved towards decreasing UL

but only slightly. The conversion boundary from plug flow to slug flow moved towards decreasing UL. With coil diameter increasing

the conversion boundary from plug flow to bubbly flow moved towards decreasing UL. The conversion boundary from plug flow to slug flow moved towards decreasing UL and increasing UG. Flow pattern transition was different from Murai flow pattern.

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