Flow pattern transition in gas-liquid downflow through narrow vertical tubes

被引：9

作者：

Kumar, Amit ^{[1
]}

Bhowmik, Satyabrata ^{[1
]}

Ray, Subhabrata ^{[1
]}

Das, Gargi ^{[1
]}

机构：

[1] Indian Inst Technol Kharagpur, Dept Chem Engn, Kharagpur 721302, W Bengal, India

来源：

AICHE JOURNAL | 2017年 / 63卷 / 02期

关键词：

two-phase flow; downflow; flow pattern transition; drift flux model; millichannel; DOWNWARD 2-PHASE FLOW; 2 PHASE FLOW; REGIME TRANSITION; VOID FRACTION; MICROCHANNELS; CRITERIA; BUBBLES; STEADY;

D O I：

10.1002/aic.15364

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The present report studies on the flow pattern transitions during vertical air water downflow through millichannels (0.83Eotvos no.20.63). Four basic flow patterns namely falling film flow, slug flow, bubbly flow, and annular flow are observed in the range of experimental conditions studied and their range of existence has been noted to vary with tube diameter and phase velocities. Based on experimental observations, phenomenological models are proposed to predict the transition boundaries between adjacent patterns. These have been validated with experimental flow pattern maps from the present experiments. Thus the study formalizes procedure for developing a generalized flow pattern map for gas-liquid downflow in narrow tubes. (c) 2016 American Institute of Chemical Engineers AIChE J, 63: 792-800, 2017

引用

页码：792 / 800

页数：9

共 27 条

[1] FLOW PATTERN TRANSITION FOR VERTICAL DOWNWARD 2 PHASE FLOW [J].