Sieve plate packing is a newly developed packing that has been used in several industries due to its simple structure and operating flexibility, and no liquid flooding. In this work, first, systematic experiments were conducted to measure the pressure drop of gas flow through six sieve plate packings. The results indicated that the geometric characteristics of the packing have complicated effects on the pressure drops. Based on this, CFD simulations on the gas flow field were conducted using the realizable k‐ε model, and flow behaviours such as the pressure drop, pressure nephogram, and velocity distributions within different packings were obtained. The simulation results clearly showed interesting flow patterns, including the contraction and expansion of the gas stream through the sieve hole, the flow separation on the sharp edge of the hole, and the vortexes formed when gas impacts the downstream plate. By comparing the flow patterns and the pressure drop under different packings operating at different conditions, the effects of the geometric characteristics of the packing on the pressure drop could be clearly distinguished from the flow behaviours, so that the variations in pressure drop with various packing structures were clearly indicated. Finally, based on the experimental data and the simulated results, correlations for the prediction of the pressure drops were proposed. This work will provide a useful basis for understanding the flow behaviour of gas and liquid two‐phase flow in sieve plate packing.

中文翻译：

---

通过筛板填料的干压降和气流特性的比较研究

筛板填料是一种新开发的填料，由于其简单的结构和操作的灵活性，并且没有液体溢流，已在多个行业中使用。在这项工作中，首先，进行了系统的实验，以测量通过六个筛板填料的气流的压降。结果表明，填料的几何特性对压降具有复杂的影响。基于此，在气体流路的CFD模拟使用变现进行了ķ - ε模型，并获得不同填料内部的流动行为，如压降，压力云图和速度分布。模拟结果清楚地显示了有趣的流动模式，包括通过筛孔的气流的收缩和膨胀，孔的尖锐边缘处的气流分离以及气体撞击下游板时形成的涡流。通过比较在不同条件下运行的不同填料的流动模式和压降，可以清楚地将填料的几何特性对压降的影响与流动特性区分开，从而使各种填料结构的压降变化明确指出。最后，根据实验数据和模拟结果，提出了用于预测压降的相关性。这项工作将为理解筛板填料中气液两相流的流动特性提供有用的基础。