Affiliation:
1. School of Petroleum Engineering, Yangtze University, Wuhan, China
Abstract
Abstract
Flow fields for various impellers were measured using water and a two-phase liquid–solid mixture with a particle image velocimetry system in a centrifugal rotating frame in controlled conditions. After measuring absolute velocity vectors in impeller passages, the vectors were decomposed based on the triangle speed principle and the distribution of relative velocity vectors within the impeller was obtained. Then, the distribution of particles and their influence on the performance of different impellers were analyzed. The following conclusions were made from the comparison of relative velocity vector field: first, the wear on the outlet of blades can be mitigated effectively by reducing the outlet angle of impeller blades; second, the pump with a double-arc-shaped profile had a more uniform and stable flow field distribution and higher performance than that with a single-arc profile; and finally, the “jet–wake” structure can be improved significantly by using impellers with long and short blades, resulting in a remarkable reduction in energy loss and improvement in pump efficiency. We also found that solid particles were mainly distributed at the outlet of the impeller and volute wall, while the concentration distribution of large particles tended to match the pressure surface. This research can provide some theoretical guidance for the design and optimization of two-phase flow centrifugal pumps.
Funder
National Natural Science Foundation of China
Educational Commission of Hubei Province of China
Publisher
Oxford University Press (OUP)
Subject
Applied Mathematics,Mechanical Engineering,Condensed Matter Physics
Reference23 articles.
1. Empirical wear relationships for centrifugal slurry pumps. Part 1: side-liners;Walker;Wear,2000
2. Calculation of solid particle motion in impeller of centrifugal pump;Hongyuan;Journal of Engineering Thermophysics,1993
3. Practical application of dilution analysis for estimating groundwater quality effects due to coal slurry injection into underground mine voids;Quaranta;Mine Water and the Environment,2014
4. PIV measurement on internal instantaneous flows of a centrifugal pump;Yulin;Science China Technological Sciences,2011
5. 2-D PIV measurements of unsteady flow field inside the rotating impeller of centrifugal pump;Yang;Transactions of the Chinese Society for Agricultural Machinery,2011
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