Cavitation in Double-suction Centrifugal Pump with Staggered Impeller
QIU Sheng
LIU Xiaobing
BAI Li
HU Quanyou
AN Manyi
Abstract：A cavitation model based on the Rayleigh-plesset equation and the RNG k-εturbulence model was de-veloped in this paper to simulate internal cavitation flow in double-suction centrifugal pump with staggered blades on both sides of the impeller. We analyzed the impact of cavitation on pressure distribution in the pump us-ing the model, and obtained the cavitation characteristic curve. We also investigated the radial force of the impel-ler under different flow conditions, the effect of cavitation on volumetric fraction of the impeller vortex as well as the distribution of turbulent kinetic energy within the pump. The results showed that the cavitation in the double-suction centrifugal pump with staggered impeller was consistent with that in the conventional centrifugal pump, and that the cavitation had a significant impact on the radial force and the turbulent kinetic energy distribution over the impeller.
Keywords：double suction centrifugal pumpstaggered impellercavitation flownumerical simulation
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 63-68 )