Abstract:An optimization method for the hydraulic design of centrifugal pumps at multioperation points was proposed by means of a global optimization algorithm and a computational model for estimating hydraulic losses and energy performance of centrifugal pumps.In the method,the values of several key geometric parameters in an original design were used as the initial conditions,and the design head was considered as a constraint condition,and the weighted average shaftpower at multiple operation conditions was chosen as the objective function.The adaptive simulated annealing algorithm was used to solve the model of hydraulic losses and energy performance.Additionally,the supertransitive approximation method was applied to update optimal weighted coefficients in the objective function.A centrifugal pump with a special speed of 129.3 was optimized with the method.The CFD numerical simulations were done for the original design and the optimized one,respectively.It was shown that the shaftpower of the optimized case is less,but the head is higher than the original design at 0.6Qd and 1.2Qd.The weighted average shaftpower optimized is decreased by 0.06%,but the weighted average efficiency rises by 0.46% compared with the original design.The results could be really useful to design an energysaving centrifugal pump.
王凯, 刘厚林, 袁寿其, 吴贤芳, 王勇. 离心泵多工况水力性能优化设计方法[J]. 排灌机械工程学报, 2012, 30(1): 20-24.
WANG Kai, LIU Hou-Lin, YUAN Shou-Qi, WU Xian-Fang, WANG Yong. Optimization method for hydraulic performance of centrifugal pump at multi operation points. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(1): 20-24.
参考文献(References)[1]袁寿其.低比速离心泵理论与设计[M].北京:机械工业出版社,2007.[2]葛宰林,吕斌,于馨.基于速度系数法的离心泵叶轮优化设计[J].大连铁道学院学报,2006,27(3):37-40.Ge Zailin,Lü Bin,Yu Xin.Optimal design of centrifugal pump impeller[J].Journal of Dalian Railway Institute,2006,27(3):37-40.(in Chinese)[LL][3]滕书格.离心泵水力模型多目标优化研究[D].济南:山东大学机械工程学院,2008.[4]Grapsas V,Stamatelos F,Anagnostopoulos J,et al.Numerical study and optimal blade design of a centrifugal pump by evolutionary algorithms[C]∥Proceedings of the 12th International Conference on KnowledgeBased Intelligent Information and Engineering Systems.Zagreb,Croatia:Springer-Verlag,2008:26-33.[5]高江永,张振山,杨玉敏.蜗壳内水力损失模型的研究[J].流体机械,2007,35(9):26-28.Gao Jiangyong,Zhang Zhenshan,Yang Yumin.Research on hydraulic losses model in the volute[J].Fluid Machinery,2007,35(9):26-28.(in Chinese)[6]郭涛,李国君,田辉,等.基于遗传算法的离心泵叶轮参数化造型及优化设计[J].排灌机械工程学报,2010,28(5):384-388.Guo Tao,Li Guojun,Tian Hui,et al.Parametric modeling and optimization design of centrifugal pump impeller based on genetic algorithm[J].Journal of Drainage and Irrigation Machinery Engineering,2010,28(5):384-388.(in Chinese)[7]Karassik Igor J,Messina Joseph P,Cooper Paul,et al.Pump Handbook[M].4th ed.New York:McGrawHill Professional,2008.[8]刘厚林,谈明高,袁寿其.离心泵理论扬程的计算[J].农业机械学报,2006,37(12):87-90.Liu Houlin,Tan Minggao,Yuan Shouqi.Research on calibration of theoretical head of centrifugal pumps[J].Transactions of the Chinese Society for Agricultural Machinery,2006,37(12):87-90.(in Chinese)[9]刘厚林,谈明高,袁寿其.离心泵圆盘摩擦损失计算[J].农业工程学报,2006,22(12):107-109.Liu Houlin,Tan Minggao,Yuan Shouqi.Calculation of disk friction loss of centrifugal pumps[J].Transactions of the CSAE,2006,22(12):107-109.(in Chinese)[10]关醒凡.现代泵理论与技术[M].北京:中国宇航出版社,2011.[11]郑赟韬,蔡国飙,尘军.用于概念设计的离心泵叶轮多目标优化[J].航空动力学报,2007,22(9):1554-1559.Zheng Yuntao,Cai Guobiao,Chen Jun.Multiobjective optimization of centrifugal pump impeller for conceptual design[J].Journal of Aerospace Power,2007,22(9):1554-1559.(in Chinese)