Abstract:The transient air-water two-phase flow field in 65ZB-40 self-priming centrifugal pump du-ring self-priming period was simulated numerically by using the standard k-ε turbulence model, VOF multi-phase model, sliding mesh technique and the velocity profile measured at the inlet of the pump to disclose self-priming mechanism. The transient pressure, velocity and void fraction of the two-phase flow in the pump were acquired at 10 monitoring points in the volute and in 8 zones inside the impeller. The results revealed that the pressure and void fraction experience a rapidly transient process in most area of flow field inside the pump at the early and late stages of self-priming period. At the early stage of self-priming period, the velocity at the impeller entrance, in the cross-sections of volute, reflux hole and inlet to the air separation chamber oscillates, showing a dominated transient effect.
李红, 徐德怀, 李磊, 涂琴, 邹晨海. 自吸泵自吸过程瞬态流动的数值模拟[J]. 排灌机械工程学报, 2013, 31(7): 565-569.
Li Hong, Xu Dehuai, Li Lei, Tu Qin, Zou Chenhai. Numerical simulation of transient flow in self-priming centrifugal pump during self-priming period. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(7): 565-569.
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