为探明气液分离器布液板的性能,应用k-ε模型和Discrete Phase Model(DPM)模型,对分离器内流场进行了三维数值模拟。通过比较未安装布液板和安装孔直径为16~24 mm、孔隙率为25.6 ~31.8  布液板的气液分离器内部流场的速度分布与分离效率,得到布液板的整流特性。结果表明,布液板能梳理流场,降低流速不均匀度,抑制回流,使流场分布更均匀稳定,有利于液滴的沉降分离；布液板孔直径与孔隙率均不宜过大或过小,孔直径为20 mm、孔隙率为31.8  时布液板的整流效果较好。研究成果可为气液分离器的结构设计和布液板的选型提供一定的参考。

To find out the rectifying performance of the orifice plate in a gas-liquid separator, the three-dimensional flow field of the gas-liquid separator is numerically simulated, usingk-ε model and DPM model. By comparing the velocity distribution and separation efficiency of the separator without orifice plate and with different orifice baffles which have pore diameters of 16~24 mm and porosity factors of 25.56%~31.80%, the rectifying performance of orifice plate is obtained. The results show that, orifice plate can rectify the flow field, reduce the inhomogeneity of velocity, and inhibit backflow. It makes flow field more well-distributed and steady, which is good for sedimentation separation. The pore diameter and porosity factor of the plate both should not be too large or too small, and the plate with 20 mm pore diameter and 31.8% porosity factor has a better performance in this study. The results can provide guidance for the structure design of gas-liquid separator and the type selection of the orifice plate.