Blade Section Design of Marine Propellers with Minimum Cavitation Induced Pressure Fluctuations

9th International Symposium on Cavitation

Zeng, Zhibo^1 ; Kuiper, Gert^2

China Ship Scientific Research Center, Wuxi

214082, China^1

Soetendaalseweg, Bennekon

106721 XB, Netherlands^2

关键词: Cavitation channels;    Design and optimization;    Marine propeller;    Non-dimensional parameters;    Optimization method;    Prediction methods;    Pressure fluctuation;    Quasi-steady conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012078/pdf
DOI  :  10.1088/1742-6596/656/1/012078

来源: IOP

【 摘 要 】

To minimize cavitation induced pressure fluctuations by marine propellers with minimum efficiency loss, the paper presents a new design and optimization method using a blade section design method. The sheet cavity volume variation on a two-dimensional blade section in quasi-steady condition has been simplified to a relation with only a limited number of non-dimensional parameters. This results in a fast prediction method of the cavity volume of a blade section passing a wake peak, using a pre-calculated database. This makes optimization feasible. The optimization method was applied to the propeller of a container ship. Extensive tests in a towing tank and a cavitation channel validated the reduction of pressure fluctuations: 33% reduction in the first blade frequency amplitude and 18% reduction in the second blade frequency amplitude, with the same open water efficiency.