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摘要
By using the EDEM-Fluent codes and coupling the continuous fluid medium with solid particle discrete element, the solid-liquid two-phase flow field in a centrifugal pump was simulated under the same inlet condition of particle volume fraction and three flow conditions of 0.7Qd, 1.0Qd and 1.3Qd.By introducing the Archard wear model, the wear was calculated and the wear law was obtained for the pump flow parts such as leading edge of impeller blade, blade tip, blade pressure side, blade suction side, impeller shroud, hub and volute.The results demonstrate that the wear of volute is about 70% of the total wear of pump.The wear in the impeller mainly occurs in the leading edge of blade, the junction of hub and the trailing part of blade pressure side, and the junction of shroud and the later part of blade suction side.Under the lower flow condition, the wear in the impeller shroud is relatively considerable.As the flow rate increases, the wear in blade pressure side and hub increases significantly. ? 2020, Editorial Department of "Journal of Engineering for Thermal Energy and Power". All right reserved.
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