垂直向下管内两相流泡状-弹状流型转换研究

发布时间：2017-12-31 23:16

本文关键词：垂直向下管内两相流泡状-弹状流型转换研究　出处：《应用力学学报》2017年04期 　论文类型：期刊论文

【摘要】：建立实验系统,在维持管道出口压力为0.2MPa的条件下,对内径分别为15mm、25mm、40mm、65mm的垂直向下管内空气-水气液两相流动进行了实验研究,获得了两相流泡状-弹状流型分布。实验研究发现:管径对于泡状流与弹状流流型特征有较大影响,并且进一步影响流型转换边界,随着管径增加,泡状流-弹状流的流型转换边界向折算气速减小的方向移动。基于理论推导及实验数据,建立了垂直向下管内气液两相流泡状流-弹状流流型转换预测模型,该模型对本文实验工况条件下的垂直向下管内空气-水气液两相流流型转换具有良好的预测效果,预测模型的计算结果与实验数据之间的误差小于10%。
[Abstract]:The experimental system was established. Under the condition of maintaining the outlet pressure of the pipeline at 0.2MPa, the inner diameter of the pipe was 15mm to 25mm / 40mm, respectively. An experimental study on the air-water gas-liquid two-phase flow in a 65mm vertical downward tube was carried out. The experimental results show that the pipe diameter has a great influence on the characteristics of bubbly flow and slug flow, and further affects the flow pattern transition boundary, with the increase of pipe diameter. Based on the theoretical derivation and experimental data, a prediction model of bubbly and slug flow in vertical downward tube is established. The model has a good prediction effect on the air-gas-liquid two-phase flow pattern conversion in the vertical downward pipe under the experimental conditions. The error between the calculated results of the prediction model and the experimental data is less than 10.
【作者单位】：西安交通大学多相流国家重点实验室;
【基金】：国家自然科学基金面上项目(51176153)
【分类号】：O359.1
【正文快照】： 管内气液两相流在核能、采油、化工等多个工业领域有重要应用,是多相流领域的重要研究方向。微生物驱油技术是近几年发展起来的提高采油效率、增加石油产量的重要工业技术,在该技术的实施过程中需要通过采油管道,采用加气注水的方式对地下油藏内提供微生物及大量空气,是典型的

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