Abstract: Based on continuity equation and motion equation of fluids, the flow field of quasithreedimensional direct problem was solved through iterative calculation for two kinds of stream surfaces. The distribution of axis plane velocity in mediumhigh specific speed centrifugal pump impeller was obtained. Based on the flow field of the direct problem, the inverse problem of centrifugal pump impeller was designed by drawing blade shape with pointbypoint integration, thickening blade and smoothing leading edge of the blade through conformal mapping. The impeller was not finally accomplished until the iterative calculation of direct and inverse problems were converged. The threedimensional flow fields of the centrifugal pump impeller designed were simulated with RNG k-ε turbulent model and SIMPLEC algorithm. The distributions of pressure and velocity field inside the impeller were obtained. The simulation results show that pressure distribution inside the impeller designed here is well uniform. The flow inside impeller is steady without separation. The energy distribution at impeller outlet is reasonable. The impeller designed by this method has superior hydraulic performance.
谭 磊, 曹树良. 中比转速离心泵叶轮的优化设计及数值模拟[J]. 排灌机械工程学报, 2010, 28(4): 282-285.
Tan Lei, Cao Shuliang. Optimal design and numerical simulation for impeller of centrifugal pump with mediumhigh specific speed. Journal of Drainage and Irrigation Machinery Engin, 2010, 28(4): 282-285.
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