Centrifugal pumps are used in several industrial processes. It is common the operation of this equipment with gas–liquid mixtures, which is the case of the electrical submersible pumping artificial lift method used in the oil industry. The increase of free gas fraction inside the pump may lead to unstable operation and problems such as surging and gas locking phenomena to occur. In this study a drift-flux model is proposed for the gas–liquid flow subjected to centrifugal fields using the impeller as an example. The model is closed with experimental data of bubble diameter, displacements and velocities acquired via high-speed camera at several different rotational speeds and gas mass flow rates using water as the continuous medium. From the modeling and the forces balance in the bubbles, quantitative criteria for the start point of surging and gas locking conditions were proposed.

中文翻译：

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受离心场影响的气液流动的漂移通量模型

离心泵用于多种工业过程。这种设备在气液混合物的情况下运行是很常见的，石油工业中使用的电潜泵人工举升方法就是这种情况。泵内游离气体含量的增加可能导致泵运行不稳定，出现喘振、气锁等问题。在这项研究中，以叶轮为例，提出了一种受离心场作用的气液流动的漂移通量模型。该模型以水作为连续介质在几种不同的旋转速度和气体质量流量下通过高速相机获得的气泡直径、位移和速度的实验数据来封闭。从建模和气泡中的力平衡，