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首页> 外文期刊>JSME International Journal. Series B, Fluids and Thermal Engineering >A Study of the Flow Characteristics in Air-Water Two-Phase Flow under Microgravity (Results of Flight Experiments)
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A Study of the Flow Characteristics in Air-Water Two-Phase Flow under Microgravity (Results of Flight Experiments)

机译：微重力作用下空气-水两相流的流动特性研究（飞行实验结果）

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摘要

Reliable design of space thermal management systems requires a through understanding of the hydrodynamic characteristics of two-phase flow influenced by the change in gravity. The data of flow patterns, void fraction, frictional pressure drop associated with its characteristics were obtained at normal gravity and in micro-gravity and hyper-gravity (2g) conditions aboard MU-300 aircraft capable of parabolic trajectory flying. Some experiments were performed for an air-water two-phase flow through 10 mm diameter adiabatic test section with 600 mm length of transparent acrylic resin horizontal tube. The results obtained at three gravity levels (μg, 1g and 2g) are compared with some of the existing flow pattern transition, void fraction and frictional pressure drop models and correlations. The gravity dependency of flow patterns was more clearly appeared with the decrease in gas and liquid flow rates. The effect of gravity on two-phase flow was insignificant for the turbulent flow regions.
机译：可靠的空间热管理系统设计需要透彻了解受重力变化影响的两相流的水动力特性。在能够进行抛物线轨迹飞行的MU-300飞机上，在正常重力以及微重力和超重力（2g）条件下，获得了流型，空隙率，摩擦压降及其特性相关的数据。通过直径为10 mm的绝热试验段，长度为600 mm的透明丙烯酸树脂水平管对空气-水两相流进行了一些实验。将在三个重力水平（μg，1g和2g）下获得的结果与一些现有的流型转换，空隙率和摩擦压降模型及相关性进行了比较。随着气体和液体流速的降低，流型的重力依赖性更加明显。对于湍流区域，重力对两相流的影响微不足道。

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