Flow characteristics of gas-liquid two-phase annular flow under microgravity (Experimental results utilizing a drop tower)

被引：7

作者：

Fujii, T

Nakazawa, T

Asano, H

Yamada, H

Yoshiyama, T

机构：

[1] Kobe Univ, Fac Engn, Nada Ku, Kobe, Hyogo 6578501, Japan

[2] Kobe Univ Mercantile Marine, Higashinada Ku, Kobe, Hyogo 6580022, Japan

[3] Kawasaki Heavy Ind Ltd, Gifu Tech Inst, Kakamigahara 5040971, Japan

来源：

JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING | 1998年 / 41卷 / 03期

关键词：

pipe flow; multiphase flow; microgravity; annular flow; void fraction; pressure drop; liquid film thickness;

D O I：

10.1299/jsmeb.41.561

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In order to predict various phenomena related to flow and heat transfer in space, it is necessary to carry out experiments under microgravity. The present work is concerned with the characteristics of gas-liquid two-phase annular flow under microgravity condition utilizing a drop tower. The experiments were carried out in a vertical transparent acrylic tube of 10.5 mm I.D. and 200 mm length, using a mixture of gaseous nitrogen (GN2) and water as the working fluid, in an annular flow region. The mean void fraction, pressure drop and liquid film thickness under microgravity were obtained and compared with the results of a ground test. It was found that the roughness of the liquid film surface was less and the mean liquid film thickness became greater under microgravity than under normal gravity.

引用

页码：561 / 567

页数：7

共 11 条

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