The paper presents a simplified prediction method to estimate cavitation-induced pressure fluctuations by marine propellers in a nonuniform wake field. It is realized by a very fast calculation of the cavitation volume variation. The sheet cavitation volume is represented by the cavitation area in a two-dimensional section, which is the vapor area inside the cavity contour. The variation of the cavitation area on a two-dimensional blade section has been simplified to a relation in quasi-steady condition with only a limited number of nondimensional parameters. This results in a fast method to predict the cavitation area of a blade section passing a wake peak, using a precalculated database. Application of this method to the prediction of cavitation-induced pressure fluctuations shows to be effective. This makes optimization of propeller sections for minimum cavitation-induced pressure fluctuations feasible.
A Fast Method to Predict the Cavitation Volume on Two-Dimensional Sections
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received November 5, 2018; final manuscript received April 10, 2019; published online May 8, 2019. Assoc. Editor: Shawn Aram.
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Zeng, Z., and Kuiper, G. (May 8, 2019). "A Fast Method to Predict the Cavitation Volume on Two-Dimensional Sections." ASME. J. Fluids Eng. November 2019; 141(11): 111102. https://doi.org/10.1115/1.4043499
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