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Centrifugal pump cavitation and cavitation erosion analysis
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Journal Article
Centrifugal pump cavitation and cavitation erosion analysis
2025
Overview
The phenomena of cavitation and cavitation corrosion exist widely in the fields of hydraulic machinery, ship propulsion, water conservancy, and hydropower etc., which often bring negative impacts, but their research is significant for energy-saving technology. This paper discusses the importance of pump cavitation and cavitation from numerical simulation and experimental measurement. Numerical simulations reveal that cavitation in centrifugal pumps begins at the impeller inlet vanes, and the extent of the cavitation bubbles increases and expands along the flow path. When serious, the vane outlet flow velocity increases, causing a vortex, affecting the normal work of the pump, reducing the operating efficiency, and increasing the energy consumption. Reducing cavitation through optimised design can improve efficiency, reduce energy consumption, and help save energy. In terms of experimental research, the method, process, and results of the cavitation test are introduced. Cavitation wear causes changes in equipment characteristic curves and loss of quality, resulting in reduced efficiency, shorter life, and increased energy consumption. The study of the cavitation mechanism, the development of cavitation-resistant materials, and the optimisation of design can extend equipment life and reduce energy consumption. Finally, this paper proposes the development direction of cavitation research, including in-depth investigation of the micro-mechanisms, development of more accurate simulation and measurement techniques, and optimisation of design and material selection in combination with energy-saving requirements to reduce cavitation and improve the energy-saving performance of equipment.
Publisher
IOP Publishing
Subject
