Transient analysis on pressure stabilization of spring linked two-stage perforated plates

摘要

Spring linked two-stage perforated plate (STP) is a novel industrial component, which can be used for pressure stabilization in piping systems. In this paper, dynamic flow characteristics of STP with different holes arrangements are investigated with transient numerical methods by moving grids technology and User-Defined Function (UDF). The reliability of numerical methods is validated by theoretical calculations and comparison with similar components. Then, different plate holes diameters are analyzed to figure out their effects on pressure stabilizing performances. Meanwhile, the effects of the center hole on the dynamic response are investigated by comparing STP with/without the center hole. Finally, the effects of plate holes number on pressure stabilizing performances are studied under constant specific aperture ratio or constant specific holes diameters. The results show that the larger holes number, smaller holes diameter and the existence of center hole can be useful for the pressure stabiliziation of STP. This work can be useful for the further work on STP and other similar pressure stabilization devices.