Effect of aspect ratio on relationship between flow resistance and flow regime of two-phase flow in rectangular channel

被引：0

作者：

机构：

[1] National Key Discipline Laboratory of Nuclear Safety and Simulation Technology, Harbin Engineering University

来源：

Yan, C.-Q. (changqi_yan@163.com) | 1993年 / Atomic Energy Press卷 / 47期

关键词：

Aspect ratio; Flow regime; Rectangular channel; Resistance characteristic;

D O I：

10.7538/yzk.2013.47.11.1993

中图分类号：

学科分类号：

摘要：

On the basis of visual observation, the effects of aspect ratio on relationship between flow resistance and flow regime were investigated experimentally for two-phase flow in three rectangular channels with the same cross-section width of 43 mm and different heights of 1.41, 3 and 10 mm, respectively. According to the criteria in terms of restriction factor Co, the former two channels belong to narrow channel, whereas the last one is conventional channel. The experimental results show that the two-phase pressure drops in rectangular channel with different aspect ratios have different variation trends with the increase of the gas velocity. For the 10 mm channel, the gravitational pressure drop makes the major percentage of total pressure drop at low gas velocity while the frictional pressure drop is dominant for the 1.41 mm and 3 mm channels. With the increase of the gas flow rate, the frictional pressure drop contributes more to total pressure drop. The range of churn flow can be distinguished from its pressure drop characteristic in 10 mm channel.

引用

页码：1993 / 1997

页数：4

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