Study on pressure drop and cavitation performance of rotating disk at different speeds

Asian Working Group- IAHR's Symposium on Hydraulic Machinery and Systems

Ge, X.F.^1 ; Chen, H.N.^1 ; Ning, W.W.^1 ; Jiang, Q.F.^2 ; Zhao, M.^3 ; Ding, Y.S.^4 ; Du, J.Q.^4

College of Energy and Electric Engineering, Hohai University, Nanjing, China^1

Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, China^2

Research Institute of Yunnan Power Grid Co. Ltd., Kunming, China^3

Yunnan Electric Test and Research Institute Group. Co. Ltd, Kunming, China^4

关键词: Cavitation bubble;    Cavitation performance;    Different speed;    Field test;    Linear curve;    Low pressure zone;    Minimum pressure;    Rotating disc;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/163/1/012099/pdf
DOI  :  10.1088/1755-1315/163/1/012099

来源: IOP

【 摘 要 】

Cavitation is harmful to hydraulic machinery and equipment, which often reduces the service life and efficiency of equipment. In this paper, cavitation is further studied by studying the cavitation of the rotating disc. In this paper, the generation of the cavitation bubble in the rotating disc is numerically simulated, and the location of the low pressure zone and the relationship between the number and the speed, when the rate is less than 2000r/min, fitting the speed and minimum pressure, the fitting relation is a linear curve; the shape of the bubble coming out of the cavitation source and the position of the bubble on the rotating disk. Verified by the field test, cavitation source side of the metal and the specimen produced erosion by long time cavitation.