微通道中油水两相流的泊肃叶数影响因素

发布时间：2019-03-31 19:01

【摘要】：泊肃叶数是表征微通道阻力特性的重要参数。为了研究微米级通道中油水两相流动速度和含油率对泊肃叶数的影响,文中选用水力直径为195μm的微通道和8μm的过渡型微通道,对不同雷诺数和含油率的油水两相流动进行了实验研究和理论分析。研究结果表明:对于这2种尺度的微通道,油水两相流的泊肃叶数随雷诺数和含油率的变化规律有明显的差异。对于195μm的微通道,雷诺数对泊肃叶数没有明显影响,而在含油率为0.3和0.7时泊肃叶数分别达到最小值约30和最大值约120。对于8μm的过渡型微通道,雷诺数和含油率都对泊肃叶数有明显影响,在含油率为0.6时泊肃叶数达到最大值约300。分析了泊肃叶数与油水两相流流型的相关性,提出了泊肃叶数与雷诺数以及含油率之间的关系式。
[Abstract]:The number of Poiseux leaves is an important parameter to characterize the resistance characteristics of microchannels. In order to study the effect of oil-water two-phase flow velocity and oil content on the number of Poisson leaves in micron channel, the micro-channel with hydraulic diameter of 195 渭 m and the transitional micro-channel with 8 渭 m are selected. The oil-water two-phase flow with different Reynolds number and oil content is studied experimentally and theoretically. The results show that for these two-scale microchannels, there is a significant difference in the number of Poisson leaves with Reynolds number and oil content in the oil-water two-phase flow. For the microchannel with 195 渭 m, Reynolds number has no obvious effect on the number of leaves, but when the oil content is 0.3 and 0.7, the number of leaves reaches the minimum value of about 30 and the maximum value of about 120, respectively. For the 8 渭 m transitional microchannel, Reynolds number and oil content have obvious effects on the number of Poisson leaves, and the maximum number of leaves reaches the maximum value of about 300 when the oil content is 0.6. The correlation between the number of Poisson leaves and the flow pattern of oil-water two-phase flow is analyzed, and the relationship between the number of Poisson leaves and Reynolds number and oil content is put forward.
【作者单位】：西安交通大学动力工程多相流国家重点实验室;
【基金】：国家自然科学基金资助项目(11572241)
【分类号】：O359

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