Experimental study on the unsteady evolution mechanism of centrifugal pump impeller wake under solid–liquid two-phase conditions: Impact of particle concentration

• DOI: 10.1063/5.0239240
• Publication Date: 2024-11-07T15:24:48Z
• Authors: Wei Pu; Leilei Ji; Wei Li; Qiaoyue Yang; Zhenbo Liu; Yang Yang; Haoming Li; Wei Huang; Ramesh Agarwal
• Keywords: Particle (ecology)

To study the spatiotemporal evolution process of particle wakes behind impeller in centrifugal pump, this paper utilized high-speed photography to capture motion characteristics under different solid-phase concentrations (1%, 1.5%, and 2%). First, studies changes hydraulic performance pump solid–liquid two-phase flow conditions. It then introduces wake, comparing differences wake varying concentrations. Finally, impact concentration on wear volute's partitions is investigated. This found that as increases, gradually declines. Under design conditions, when increases by 0.5%, efficiency decreases 0.56% 0.35%. There mutual transport particles between adjacent wakes, movement within volute passage not equidistant over time. As cutting occurs at partitions, there a significant separation wakes. The spatial significantly influenced concentration. Wear intensifies with increasing also affected research results provide basis for further exploration dynamics pumps.