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中文摘要：
采用光纤探针测量方法,对倾斜圆管中气液两相流动的空泡径向分布特性进行了实验研究,并对其形成原因进行了分析.实验选用有机玻璃圆管内径为50mm,竖直倾斜角度为5°,15°和30°,液相折算速度为0.071-0.284m/s,气相折算速度的范围为0-0.05m/s.结果表明：随着倾斜角度的增加,空泡份额径向分布逐渐由＂核峰＂、＂壁峰＂分布向单一＂壁峰＂分布转变;通过分析气泡受到的横向升力、浮力径向分量和壁面力,发现升力、浮力、壁面力的共同作用,使气泡在圆管径向位置15mm与22mm之间处聚集,从而造成空泡份额沿径向呈＂壁峰＂型分布.
英文摘要：
Void fraction radial distribution of gas-liquid two phase flow in an inclined circular tube was investigated experimentally by using an optical fiber probe,and the reason for its formation was also illustrated.Experiments were conducted in an inclined circular tube made of perspex with inner diameter of 50mm,and inclination angles of 5°,15°and 30°.The specific liquid velocity was 0.071-0.284m/s and the specific gas velocity covered the range of 0-0.5m/s.The results show that,with increase of the inclined angle,the radial distribution of void fraction gradually shifts from the‘core peak＇and‘wall peak＇to the single‘wall peak＇distribution.The analysis of the buoyancy component in radius and lateral lift forces as well as wall force acting on bubbles shows that the combined effects of these forces lead to the bubbles gathering around the radial position between 15mm and 22mm,resulting in the‘wall peak＇distribution of the void fraction.
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