Statistical characteristics of two-phase gas-liquid flow in a vertical microchannel

被引：17

作者：

Kozulin, I. A. ^{[1
]}

Kuznetsov, V. V.

机构：

[1] Novosibirsk State Univ, Novosibirsk 630090, Russia

来源：

JOURNAL OF APPLIED MECHANICS AND TECHNICAL PHYSICS | 2011年 / 52卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

microchannel; gas-liquid flow; flow regimes; slug velocity; statistical characteristics of flow; VOID FRACTION; PRESSURE-DROP; HEAT-TRANSFER; SLUG FLOW; EVOLUTION; CHANNELS;

D O I：

10.1134/S0021894411060149

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper presents an experimental study of the structure of an upward gas-liquid flow in a vertical microchannel with a cross-sectional dimension of 0.67 x 2.00 mm and a length of 0.5 m. The tests were performed in the ranges of reduced rates of nitrogen 0.04-11.00 m/sec and water 0.07-0.41 m/sec. Using the method of two-beam laser scanning, we identified the main flow regimes (slug-bubble, slug, transient, emulsion, and annular) and determined the statistical characteristics of the two-phase flow. A map of flow regimes was constructed, the dependence of slug velocity on the reduced mixture velocity was obtained, and the friction factor for an upward gas-liquid flow in a microchannel was measured.

引用

页码：956 / 964

页数：9

共 17 条

[1] On gas-liquid two-phase flow regimes in microchannels [J].