基于准稳态过程的混流泵启动性能优化  

Optimization of start-up performance of mixed-flow pump based on quasi-steady state process

作　　者：李伟[1,2] 杨毅 李硕[1] 刘明江[1] 齐寒东 LI Wei;YANG Yi;LI Shuo;LIU Mingjiang;QI Handong(National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013,China;Zhenjiang Institute of Fluid Engineering Equipment Technology,Jiangsu University,Zhenjiang,Jiangsu 212009,China)

机构地区：[1]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013 [2]江苏大学镇江流体工程装备技术研究院,江苏镇江212009

出　　处：《排灌机械工程学报》2025年第1期31-37,52,共8页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金重点国际合作项目(52120105010);国家自然科学基金资助项目(52179085)。

摘　　要：在ANSYS Workbench的基础上结合OptiSLang优化设计软件,对混流泵启动过程进行优化.利用准稳态理论和全流域模型计算数据,建立了混流泵准稳态启动过程的水力性能响应面替代模型.通过NSGA遗传算法优化内部流动状态,降低启动过程中的涡致能量损失,从而提升混流泵的水力性能.将原始混流泵与优化后混流泵的外特性、叶片压力分布进行对比,并分析混流泵内部涡结构,验证了所提出的准稳态启动过程水力性能优化方案的可行性.研究结果表明:叶片进口安放角α1,α4,α5,叶片出口安放角β1,β2,β3,β4,β5,叶片包角φ和叶片厚度系数θ对混流泵加权平均扬程和加权平均效率的影响程度较大;对比不同启动时刻下混流泵的叶片压力分布,发现该方法能够有效提升混流泵启动中后期的瞬态扬程和启动中期的水力效率.The start-up process of a mixed-flow pump was optimized using ANSYS Workbench in conjunction with OptiSLang optimization design software.Utilizing quasi-steady state theory and full-domain model calculation data,a response surface surrogate model for the hydraulic performance during the quasi-steady start-up process of the mixed-flow pump was established.The internal flow state was optimized and the vortex-induced energy losses was reduced during the start-up process by using the NSGA genetic algorithm,and thus enhancing the hydraulic performance of the mixed-flow pump.The hydraulic characteristics and blade pressure distribution of the original and optimized mixed-flow pumps were compared,and the internal vortex structure was analyzed,and the feasibility of the proposed hydraulic performance optimization scheme for the quasi-steady start-up process was verified.The research results indicate that the blade inlet anglesα1,α4,α5,outlet anglesβ1,β2,β3,β4,β5,blade wrap angleφ,and blade thickness coefficientθhave a significant impact on the weighted average head and weighted average efficiency of the mixed-flow pump.The blade pressure distribution at diffe-rent start-up times was compared,it was found that this method can effectively improve the transient head in the middle and late stages of start-up process.

关 键 词：混流泵 启动过程 响应面模型 NSGA遗传算法 数值计算 

分 类 号：S277.9[农业科学—农业水土工程] TH311[农业科学—农业工程]