摘要
为优化高速泵的水力性能和流动性能,借助计算流体力学软件CFX19.0分析高速泵主要结构参数对扬程、效率和流动性能的影响规律,采用单因素敏感性分析方法确定叶轮叶片出口角β_(2)、叶轮叶片包角1、导叶叶片出口角α_(4)和导叶叶片包角2为设计变量,以高速泵的扬程H、效率η和湍流动能k为优化指标,基于响应面优化法对叶轮、导叶和压水室进行优化设计。确定最优设计参数:β_(2)=35°、1=130°、α_(4)=13.993°、φ_(2)=90.049°;性能参数:扬程为156.852 m,水力效率为76.085%,最大湍流动能为16.123 m^(2)/s^(2)。较原始模型,扬程提升13.33%,满足设计要求同时,水力效率提升15.048%和最大湍动能降低22.298%。
In order to optimize the hydraulic performance and flow performance of high-speed pump,with the help of computational fluid dynamics software CFX19.0,the influence rules of main structure parameters on the high-speed pump head,efficiency and flow behavior were analyzed,and by using the single factor sensitivity analysis method to determine the impeller blade outlet angle β_(2),impeller blade wrap angle 1,guide vane outlet angle α_(4) and guide vane wrap angle 2 as design variables,and taking the head H,efficiency η and turbulent kinetic energy k as the optimization indexes,optimization design of the impeller,guide vane and volute was carried out based on response surface optimization method.The optimal design parameters:β_(2)=35°, 1=130 °,α_(4)=13.993 °, φ_(2)=90.049° Performance parameters:head of 156.852 m,hydraulic efficiency of 76.085%,and maximum turbulent kinetic energy of 16.123 m^(2)/s^(2).Compared with the original model,the head is increased by 13.33%,while meeting the design requirements,the hydraulic efficiency is increased by 15.048% and the maximum turbulent kinetic energy is reduced by 22.298%.
作者
丛小青
肖建荣
李辉
杨大壮
CONG Xiaoqing;XIAO Jianrong;LI Hui;YANG Dazhuang(School of Energy and Power Engineering,Jiangsu University,Zhenjiang 212013,China)
出处
《流体机械》
CSCD
北大核心
2022年第12期27-34,共8页
Fluid Machinery
基金
国家自然科学基金创新研究群体项目(50649029)。
关键词
水力性能
湍流动能
响应面法
优化设计
hydraulic performance
turbulent kinetic energy
response surface method
optimization design
