不同掺气孔径下水流空化特性试验研究  

An experimental study on cavitation characteristics of aeration hole with different diameters

作　　者：郭志萍[1,2] 董志勇[2] 韩伟[2] 

机构地区：[1]山西水利职业技术学院,山西运城044004 [2]浙江工业大学水利与市政工程研究所,杭州310014

出　　处：《水动力学研究与进展（A辑）》2013年第1期30-34,共5页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金项目(50879078);浙江省重点科技创新团队计划(2010R50035);山西水利职业技术学院课题(Sxsyjky2011-02)~~

摘　　要：空化数反映了压力变化对水流空化特性的影响。该文基于浙江工业大学水力学实验室设计的直流式水洞,利用先进的量测设备对空化区中空化特性进行了试验研究。通过对不同流速不同掺气孔径下圆柱突体上下游空化数的对比分析,得出了不同掺气孔径下空化数的变化趋势有关的结论。该结论可供设计优化掺气设施时参考。Cavitation number describes the effect of pressure change on cavitation characteristics of flow. In this paper, based on non-circulating water tunnel which is designed in the Hydraulics Laboratory of Zhejiang University of Technology, the experimental study was carried out about cavitation characteristics in cavitation region by using advanced measurement equipments. The analysis on cavitation number of cylindrical irregularity upstream and downstream with different velocities and diameters of aeration hole was studied, and change trend of cavitation number for different diameters of aeration hole was developed, which provides reference for designing optimized aerator.

关 键 词：水力学 空化特性 掺气孔径 空化数 

分 类 号：TV131.3[水利工程—水力学及河流动力学]