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中文摘要：
利用高速摄像系统,对4种倾角下窄矩形通道（3.25 mm×40 mm）内弹状流进行了可视化研究。实验中发现,低流速时,倾斜条件下,由于浮力的影响,气弹头部偏离管道中心,头部变尖,因而气弹运动速度加快,系数C0随倾角增加而减小,漂移速度V0呈相反变化趋势;高流速时,流动趋于稳定,倾角对气弹速度影响不显著,对C0和V0影响较小。通过实验数据评价了竖直条件下4种气弹速度计算关联式。以Froude数3.5为界,分别提出了倾斜条件下C0和V0计算关联式。
英文摘要：
Visualized experiments were conducted by using a high speed video camera system to study slug flow in a narrow rectangular channel（3.25 mm×40 mm）with four inclination angles.For low two-phase superficial velocity,due to buoyancy slug nose deviated from the channel centerline and became sharper under inclined condition,resulting in the increase of slug velocity.The coefficient C0 decreased with increasing inclination angle,while drift velocity V0 varied inversely.For the case of high two-phase superficial velocity,the influence of inclination angle on slug velocity weakened with the flow tending to be stable,as was the same to C0 and V0.Four classical correlations for calculating slug velocity were evaluated against the experimental data.The correlations of C0 and V0 were given according to the threshold of 3.5 of Froude number.
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