Abstract

The results of numerical and experimental investigations aimed at creating a methodology for predicting the erosion characteristics of vane pumps were conducted in this paper. This methodology especially relevant in the case of pumping liquids with physical properties different from water. The methods of computational fluid dynamics (CFD) well predict the operation failure due to cavitation and allow us to determine the areas of possible cavitation erosion. The conditions for the absence of cavitation erosion also could be predicted with the help of CFD methods. In order to verify the numerical prediction of cavitation erosion, test bench working on water was created, which allows to verify methods of experimental investigations of cavitation erosion with the help of express analysis based on paint coatings.

Highlights

  • The results of numerical and experimental investigations aimed at creating a methodology for predicting the erosion characteristics of vane pumps were conducted in this paper

  • Numerical studies of the cavitation characteristics of a vane type pump using computational fluid dynamics methods are necessary for determining the quality of a designed flow part [1,2,3]

  • Problems of cavitation erosion are compounded in the case of pumping aggressive, multifractional, polluted, oil and other liquids, the physical properties of which are different from water and the intensity of micro-blows arising from the "collapse" of cavitation bubbles can increase dramatically

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Summary

Numerical calculation of the cavitation characteristics

Numerical studies of the cavitation characteristics of a vane type pump using computational fluid dynamics methods are necessary for determining the quality of a designed flow part [1,2,3]. Problems of cavitation erosion are compounded in the case of pumping aggressive, multifractional, polluted, oil and other liquids, the physical properties of which are different from water and the intensity of micro-blows arising from the "collapse" of cavitation bubbles can increase dramatically. In this regard, there are questions about how to improve the flow part of the pump, to prevent damage from cavitation. The axial pump’s operation failure parameters and find the value of the NPSH

Experimental and numerical investigation of axial pump
Findings
Conclusions
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