Study on Some Properties of Hydrodynamic Cavitation Damage

2018 4th International Conference on Renewable Energy Technologies

Liu, Zhaocun^1,2 ; Wang, Xiaoqing^1,2 ; Fan, Weijia^1 ; Yv, Kui^1

Chongqing Jiaotong University, Chongqing, China^1

Key Laboratory of Communication Civil Waterway Regulation, Chongqing, China^2

关键词: Affecting factors;    Cavitation damage;    Coherent structure;    Energy distributions;    Hydrodynamic cavitations;    Turbulent structures;    Value distribution;    Viscous effect;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/168/1/012028/pdf
DOI  :  10.1088/1755-1315/168/1/012028

来源: IOP

【 摘 要 】

Some hydrodynamic cavitation damage properties were studied in this letter. From the viewpoint of cavitation damage, the flowing characters near the wall, such as three features of the turbulent structures, streak structure; vortices; and bursting phenomena, the energy distribution, and the fluctuation character were explored. The characters of cavitation and cavitation damage were investigated, the relations among the cavitation, coherent structure and viscous effect were explored, and the energy characters in cavitation damage flowing field was studied. The results show that, the cavitation damage will have close relationship with the value distribution of the Lamb vector and the helicity. The relation between the cavitation damage and the Reynolds number essentially results from the eddy effect. The conceptive formula of cavitation damage was given. The paper clearly demonstrated the affecting factors to dominate the cavitation damage to make it show stochastic characters. These results may be useful to civil engineers.