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首页> 外文期刊>Journal of visualization >Gas volume fraction and velocity profiles - Vertical and inclined bubbly air-water flows
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Gas volume fraction and velocity profiles - Vertical and inclined bubbly air-water flows

机译:气体体积分数和速度曲线-垂直和倾斜的气泡空气水流

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Upward inclined gas-liquid flows are frequently encountered in the oil industry and data relating to the local gas volume fraction distribution and the local gas velocity distribution is important, for example, in pressure gradient prediction and in modeling oil well 'blowouts'. In this paper measurements are presented of the local gas volume fraction distribution and the local axial gas velocity distribution which were taken in bubbly air-water flows in an 80 mm diameter pipe which was inclined at angles of 0 degrees, 15 degrees and 30 degrees to the vertical. Qualitative arguments are presented to explain the influence of the liquid superficial velocity on the local gas volume fraction distribution in inclined flow and also to explain the very high axial gas velocities observed towards the upper side of the inclined pipe.
机译:向上倾斜的气液流动在石油工业中经常遇到,与局部气体体积分数分布和局部气体速度分布有关的数据非常重要,例如,在压力梯度预测和油井“井喷”建模中。在本文中,测量了在直径为80 mm的管道中以气泡状空气-水流形式获取的局部气体体积分数分布和局部轴向气体速度分布,该管道以0度,15度和30度的角度倾斜。垂直。提出了定性的论据,以解释液体表面速度对倾斜流中局部气体体积分数分布的影响,并解释向倾斜管上侧观察到的非常高的轴向气体速度。

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