(1.Yunnan Province Hydraulic Investigation, Design & Research Institute, Kunming, Yunnan 650051, China; 2. China Institute of Water Resources and Hydropower Research, Beijing 100038, China; 3. National Engineering Research CenterHydropower Equipment, Harbin Institute of Large Electrical Machinery, Harbin, Heilongjiang 150040, China)
Abstract:The impeller of hydraulic model HEC A934 was used as an initial impeller for the centrifugal pump to be developed, and its diameter was enlarged to an expected value while the outlet blade angle kept unchanged, then the impeller geometry is going to be optimized. The meridian flow channel shape, number of blades, blade section profile, inlet and outlet blade angle and so on were altered according to the lowest, design and highest head specified by the pump user, the performance of those impellers was estimated by means of CFD codeCFX-TASCFlow to examine if the expected headflow rate curve has been achieved; if not, the alteration will be continued until an impeller with best performance is obtained. Further, the flow in the pump with this optimized impeller was simulated by using Ansys CFX to check if the suction entry, guide vane and volute casing have matched the impeller. Finally, the corresponding model pump was measured on the high head test system II in HEC. It was confirmed that all the hydraulic parameters, namely, head, flow rate, efficiency, cavitation number etc have met the target values.
郭建平, 高忠信, 覃大清, 邢海仙. 高扬程大流量离心泵CFD水力优化设计[J]. 排灌机械工程学报, 2013, 31(3): 220-224.
GUO Jian-Ping, GAO Zhong-Xin, QIN Da-Qing, XING Hai-Xian. Hydraulic design optimization of centrifugal pump with high head and large capacity by using CFD. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(3): 220-224.
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