Rotating cavitation is an important problem, which makes it difficult to design reliable rotating machines. In this study, a simple analysis method that tried to evaluate the cavitation instabilities of a rotating machinery by using one-dimensional (1D) system analysis software was attempted. In this method, cavitation compliance and mass flow gain factor are distributed in each flow path of the inducer. Analysis results show that cavitation instabilities, including rotating phenomena, exist. With the evolved analysis model, effects of various parameters on the eigenvalues of the system were investigated. Analysis results agreed with inducer test results qualitatively. Furthermore, by the analysis considered whirl motion of the rotor, effects of it on cavitation instabilities were investigated.
One-Dimensional Analysis Method for Cavitation Instabilities of a Rotating Machinery
Kakuda 981-1525, Miyagi, Japan
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received September 12, 2016; final manuscript received August 22, 2017; published online November 3, 2017. Assoc. Editor: Olivier Coutier-Delgosha.
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Kawasaki, S., Shimura, T., Uchiumi, M., and Iga, Y. (November 3, 2017). "One-Dimensional Analysis Method for Cavitation Instabilities of a Rotating Machinery." ASME. J. Fluids Eng. February 2018; 140(2): 021113. https://doi.org/10.1115/1.4037987
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