西华大学学报（自然科学版）2026，Vol.45Issue(2)：9-17,9.DOI:10.12198/j.issn.1673-159X.5435
基于NSGA-Ⅱ算法及RBF代理模型的两级液环压缩机叶片型线耦合优化分析
Coupled Optimisation Analysis of Two-stage Liquid Ring Compressor Blade Profiles Based on NSGA-Ⅱ Algorithm and RBF Surrogate Model
摘要
Abstract
In view of the problems of low efficiency of multi-stage liquid ring compressor and the im-maturity of the design theory for inter-stage blade differences,in this study,the blade wrap angle,blade in-let angle,and blade outlet angle of the two-stage impeller in the liquid ring compressor were selected as the control parameters.The blade shape was parameterized by the fourth-order Bezier curve.Latin Hypercube Sampling was used to construct the initial sample space of the surrogate model,and the multi-objective op-timization analysis was carried out considering the liquid ring compressor suction capacity and efficiency as the optimization objectives.Multi objective optimization analysis of blade profiles were carried out based on radial basis function(RBF)surrogate model and NSGA-Ⅱ algorithm.The results show that the effi-ciency of the optimal efficiency design in the two-stage impeller coupled multi-objective optimization is im-proved by 5.859%,and the suction capacity of the optimal suction capacity design is increased by 0.010 7 m3/s.For the two stage liquid ring compressor,the optimal efficiency design has the same blade shape char-acteristics,with a small wrap angle,large inlet angle,and large outlet angle.The first and second stage im-pellers of the optimal suction capacity design have different blade shape characteristics,and the wrap angle of the second stage blade is larger than that of the first stage.The suction capacity of the optimal suction ca-pacity design and the optimal efficiency design has a significant improvement compared with the original design,and the vorticity in the blade trailing edge is reduced.Reducing the difference in the compression ratio of the two stage impeller is beneficial to improve the performance of the liquid ring compressor.关键词
两级液环压缩机/叶片型线/压缩比/RBF代理模型/多目标优化Key words
two stage liquid ring compressor/blade profile/compression ratio/RBF surrogate model/multi-objective optimisation分类
机械制造引用本文复制引用
张人会,俞帅年,郑直,郭广强,陈学炳..基于NSGA-Ⅱ算法及RBF代理模型的两级液环压缩机叶片型线耦合优化分析[J].西华大学学报（自然科学版）,2026,45(2):9-17,9.基金项目
甘肃省重点研发计划项目(21YF5GA077) （21YF5GA077）
甘肃省产业支撑计划项目(2021CYZC-14) （2021CYZC-14）
甘肃省教育厅双一流重点项目. （）
