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

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.