多孔板压力特性的试验研究  

Experimental study of pressure characteristics behind multi-orifice plates

作　　者：韩伟[1] 董志勇[1] 邴斌[1] 常中权[1] 杨亮[1] 

机构地区：[1]浙江工业大学水利与市政工程研究所,杭州310014

出　　处：《水力发电学报》2014年第6期126-131,共6页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金项目(51179172)

摘　　要：本文基于浙江工业大学水力学实验室设计的多孔板水力空化装置,采用SINOCERA-YE6263动态数据采集分析系统对多孔板下游压力的时均和频谱进行了试验研究。探讨了不同孔口形状、数量、大小、布置方式对多孔板下游压力的影响,结果表明:孔口按梅花形分布对多孔板下游压力的恢复有一定的抑制作用,孔口形状对多孔板下游时均压力的影响不大。孔口数量、大小、布置方式对脉动压力功率谱有直接影响,试验结论可为多孔板的设计提供依据。Time average pressure and frequency spectrum of the flow behind multi-orifice plates have been measured using a data acquisition system of SINOCERA-YE6263 for a hydrodynamic cavitation reactor designed in the Hydraulics Laboratory, ZheJiang University of Technology. The study focuses on the effects of shape, size, spacing, and pattern of the orifices on pressure downstream of the plate. The results show that a quincunx pattern of orifices restrains effectively the pressure recovery while the shape of orifice opening has little effect on the time average pressure. The power spectrum of pressure fluctuations depends on the opening size, spacing, and pattern of orifices.

关 键 词：工程水力学 多孔板 空化 压力特性 频谱分析 

分 类 号：TV131.3[水利工程—水力学及河流动力学]