基于高维混合模型的离心泵叶轮子午面优化设计  

Optimization design of meridional surface of centrifugal pump impeller based on high-dimensional hybrid model

作　　者：张金凤[1,2] 俞鑫厚 高淑瑜 曹璞钰[1,2] 张文佳 ZHANG Jinfeng;YU Xinhou;GAO Shuyu;CAO Puyu;ZHANG Wenjia(National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013,China;Wenling Institute of Fluid Machinery Jiangsu University,Wenling,Zhejiang 317599,China;Quality Inspection Center for Pump Products in Zhejiang Province,Wenling,Zhejiang 317599,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]江苏大学流体机械温岭研究院,浙江温岭317599 [3]浙江省水泵产品质量检验中心,浙江温岭317599

出　　处：《排灌机械工程学报》2024年第4期325-332,共8页Journal of Drainage and Irrigation Machinery Engineering

基　　金：江苏省重点研发计划项目(BE2019009)。

摘　　要：为提高离心泵在设计工况下的运行效率和扬程,提出一种基于高维混合模型的离心泵叶轮优化设计方法.选取一台比转数为157的单级离心泵作为研究对象,通过CFturbo软件对优化变量进行参数化,然后结合数值模拟获得高维混合模型的训练集.在此基础上采用获取的训练集通过MATLAB机器学习得出效率、扬程与优化参数之间关于支持向量回归的高维模型,并采用遗传算法寻优.在设计工况下,所拟合的高维混合模型预测的效率和扬程值比原模型分别高1.5%和3.2 m,数值模拟验证优化方案的效率和扬程分别比原模型高0.9%和2.1 m.算例研究表明,将高维混合模型应用于离心泵叶轮的优化设计中可以实现快速寻优并提高离心泵水力性能.In order to improve the operation efficiency and head of centrifugal pumps under the design conditions,a centrifugal pump impeller optimization design method based on high-dimensional hybrid model was proposed.A single-stage centrifugal pump with specific speed of 157 was selected as the research object for this study.The optimization variables were parameterized in CFturbo software,and then combined with numerical simulation to obtain the training set of the high-dimensional hybrid model.By using MATLAB machine learning on the obtained training set,a high-dimensional support vector regression model between efficiency,head and optimization parameters was obtained,and a genetic algorithm was used for the optimization.Under the design working conditions,the predicted efficiency and head values of the fitted high-dimensional hybrid model are 1.5%and 3.2 m higher than the original model,respectively.The efficiency and head values of the optimized scheme verified by numerical simulation are 0.9%and 2.1 m higher than the original model,respectively.This case study shows that the application of a high-dimensional hybrid model in the optimal design of a centrifugal pump impeller can achieve rapid optimization and improve the hydraulic performance of the centrifugal pump.

关 键 词：离心泵 遗传算法 优化设计 支持向量机 混合模型 数值模拟 

分 类 号：S277.9[农业科学—农业水土工程]