化工学报2025，Vol.76Issue(z1)：93-105,封3,14.DOI:10.11949/0438-1157.20240777
曲折式与阵列式迷宫阀芯结构内流动与空化特性研究
Study on flow and cavitation characteristic in zigzag and array labyrinth valve core structures
摘要
Abstract
The Labyrinth valve core is a key component for controlling high-pressure liquid flow.The cavitation phenomenon in its flow channel structure is one of the bottlenecks that restricts flow adjustment.The numerical simulations have been conducted through SST k-ω turbulence model and Rayleigh-Plesset cavitation model to investigate the flow and cavitation characteristics in zigzag and array labyrinth flow channel structures.A modified trim structure was proposed that meets the requirements of low cavitation intensity and high mass flux.The results indicate that the mass flow rate of the zigzag channel was lower under identical pressure difference between inlet and outlet.The cavitation intensity was increased in zigzag channel due to the occurrence of strong boundary layer separation and the appearance of large-scale vortex regions.As for array channel,the cavitation phenomenon was observed in wake region of the final cylinder.By modifying the final cylinder to a water-droplet streamline structure,the local cavitation could be significantly mitigated while maintaining elevated mass flux.When the tail angle b=30°,the average cavitation reaches the lowest value of 41.9%.This suggests the existence of an optimal angle that minimizes the cavitation rate at the downstream outlet section.The present study can offer a theoretical foundation for optimizing the trim structure,enhancing the anti-cavitation performance,and improving the fluid mass flux of labyrinth regulating valves.关键词
迷宫阀芯/流动/空化/气液两相流/流通能力/数值模拟Key words
labyrinth valve core/flow/cavitation/gas-liquid two-phase flow/flow capacity/numerical simulation分类
机械制造引用本文复制引用
王俊鹏,冯佳琪,张恩搏,白博峰..曲折式与阵列式迷宫阀芯结构内流动与空化特性研究[J].化工学报,2025,76(z1):93-105,封3,14.基金项目
国家重点项目(2020-****-ZD) （2020-****-ZD）
