A numerical and experimental study was carried out to investigate the two-phase flow fields of the typical three valves used in the multiphase pumps. Under the gas volume fraction conditions in the range of 0%–100%, the three-dimensional steady and dynamic two-phase flow characteristics, pressure drops, and their multipliers of the ball valve, cone valve, and disk valve were studied, respectively, using Eulerian–Eulerian approach and dynamic grid technique in ANSYS FLUENT. In addition, a valve test system was built to verify the simulated results by the particle image velocimetry and pressure test. The flow coefficient C_Q (about 0.989) of the disk valve is greater than those of the other valves (about 0.864) under the steady flow with a high Reynolds number. The two-phase pressure drops of the three valves fluctuate in different forms with the vibration of the cores during the dynamic opening. The two-phase multipliers of the fully opened ball valve are consistent with the predicted values of the Morris model, while those of the cone valve and disk valve had the smallest differences with the predicted values of the Chisholm model. Through the comprehensive analysis of the flow performance, pressure drop, and dynamic stability of the three pump valves, the disk valve is found to be more suitable for the multiphase pumps due to its smaller axial space, resistance loss, and better flow capacity.

通过数值和实验研究来研究多相泵中使用的典型三阀的两相流场。在气体体积分数0%~100%范围内，分别研究了球阀、锥阀和盘阀的三维稳态和动态两相流特性、压降及其乘数，在 ANSYS FLUENT 中使用欧拉-欧拉方法和动态网格技术。此外，还搭建了阀门测试系统，通过粒子图像测速和压力测试来验证模拟结果。在高雷诺数稳态流动下，盘阀的流量系数C _Q（约0.989）大于其他阀门（约0.864）。动态开启过程中，随着阀芯的振动，三个阀门的两相压降出现不同形式的波动。全开球阀的两相乘数与Morris模型的预测值一致，而锥阀和盘阀的两相乘数与Chisholm模型的预测值差异最小。通过对三种泵阀的流动性能、压降和动态稳定性的综合分析，发现盘阀具有更小的轴向空间、阻力损失和更好的流通能力，更适合多相泵。