Abstract:The cavitiaton performance of an axial flow pump with suction specific speed of 1 290 was studied by using the 3D inverse design theory and computational fluid dynamics(CFD)technique to improve its cavitation behaviour. A few pump models with different meridional channels and numbers of blades were designed, respectively, at the same condition, i.e. the same flow rate, head, rotational speed; then a suitable meridional channel and a best number of blades were achieved with CFD me-thod. Also, the other pump models with different blade loading profiles were designed by the 3D inverse method, their head, shaft-power and efficiency curves were predicted by CFD me-thod as well, effects of the blade loading on the pump efficiency and cavitation performance were compared and analyzed; eventually, a proper blade loading for an improved suction performance was achieved. A few suggestions were proposed for the pump to have better suction performance. For example, after-loaded blade loading profile, properly increased number of blades and a smooth meridional channel are helpful to improve cavitation perfroamnce of an axial-flow pump.
靳栓宝, 王永生. 基于三元设计及数值试验轴流泵抗空化性能[J]. 排灌机械工程学报, 2013, 31(9): 763-767.
Jin Shuanbao, Wang Yongsheng. 3D design of axial-flow pump and numerical prediction of its cavitaion performance. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(9): 763-767.
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