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1 Zeszyty Naukowe Politechniki Świętokrzyskiej. Mechanika

1 2003

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Numerical analysis of cavitated flows in mixed-flow pump impellers

Sedlar M., Marsik F., Safarik P.

Zeszyty Naukowe Politechniki Świętokrzyskiej. Mechanika

2003

Z. 77

57-64

This paper deals with the flow model based on the Navier-Stokes computation and the simulation of bubble dynamics in the flow field, solving the Rayeigh-Plesset equation alongflow characteristics. No interaction between bubbles is considered. The initial bubble sizedistribution is based on a precribed distribution law and the initial void fraction. The flowpast the blades of mixed-flow pump impellers is investigated including the tip leakage flowsfor three different impeller configurations, aimed to predict the impeller configuration influence on cavitation phenomena, especially the blade surface regions endangered with the cavitation phenomena, especially the blade surface regions endangered with the cavitation erosion.