A STUDY ON VOID FRACTION IN VERTICAL COCURRENT UPWARD AND DOWNWARD 2-PHASE GAS-LIQUID FLOW .1. EXPERIMENTAL RESULTS

被引：15

作者：

JIANG, YJ

REZKALLAH, KS

机构：

[1] Department of Mechanical Engineering, University of Saskatchewan, Saskatchewan, Saskatoon

来源：

CHEMICAL ENGINEERING COMMUNICATIONS | 1993年 / 126卷

关键词：

VOID-FRACTION; 2-PHASE; UP DOWN FLOW;

D O I：

10.1080/00986449308936220

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An experimental study on void fraction in a small diameter tube (9.525 mm) for vertical upward and downward, gas-liquid, two-phase flow was carried out. Void fraction measurements in water-air were taken for both upward and downward flow using a single beam gamma densitometer. The gamma densitometer was calibrated against the reading from a quick-closing valve system. The experimental results indicate that for V(SL) greater-than-or-equal-to a 1.7 m/s, the void fraction in both upward and downward flow is almost independent of the liquid flow rate. For downward flow and V(SL) less-than-or-equal-to 0.1 m/s, the void fraction is independent of the gas flow rate. This corresponds to the flow in the falling film region. In general the void fractions in downward flow were slightly higher than those with upward flow. The experimental data were compared with some correlations and data in the literature. Fairly good agreements (overall relative R.M.S. deviation of 18%) were obtained.

引用

页码：221 / 243

页数：23

共 30 条

[1] 2-PHASE (GAS LIQUID) FLOW PHENOMENA .1. PRESSURE DROP AND HOLD-UP FOR 2-PHASE FLOW IN VERTICAL TUBES [J].