Abstract Inline fluid separation is a concept, which is used in the oil and gas industry. Inline fluid separators typically have a static design and hence changing inlet conditions lead to less efficient phase separation. For introducing flow control into such a device, additional information is needed about the relationship of upstream and downstream conditions. This paper introduces a study on this relationship for gas/liquid two-phase flow. The downstream gas core development was analyzed for horizontal device installation in dependence of the inlet gas and liquid flow rates. A wire-mesh sensor was used for determining two-phase flow parameters upstream and a high-speed video camera to obtain core parameters downstream the swirling device. For higher accuracy of the calculated void fraction, a novel method for wire-mesh sensor data analysis has been implemented. Experimental results have shown that void fraction data of the wire-mesh sensor can be used to predict the downstream behavior for a majority of the investigated cases. Additionally, the upstream flow pattern has an impact on the stability of the gas core downstream which was determined by means of experimental data analysis.

中文翻译：

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旋流两相流上下游条件关系研究

摘要 内联流体分离是一个概念，用于石油和天然气行业。在线流体分离器通常采用静态设计，因此不断变化的入口条件会导致相分离效率降低。为了将流量控制引入这样的设备，需要关于上游和下游条件关系的附加信息。本文介绍了对气液两相流这种关系的研究。根据入口气体和液体流速，对下游气芯开发进行了水平装置安装分析。使用丝网传感器确定上游的两相流参数，使用高速摄像机获取旋流装置下游的核心参数。为了获得更高的计算空隙率，已经实现了一种用于线网传感器数据分析的新方法。实验结果表明，丝网传感器的空隙率数据可用于预测大多数调查案例的下游行为。此外，上游流动模式对下游气芯的稳定性有影响，这是通过实验数据分析确定的。