多源不确定耦合下离心压气机叶轮气动稳健性

唐新姿; 王喆; 王效禹

doi:10.13224/j.cnki.jasp.2020.01.023

多源不确定耦合下离心压气机叶轮气动稳健性

doi: 10.13224/j.cnki.jasp.2020.01.023

基金项目: 国家自然科学基金(51305377,51575466,51975504); 湖南省自然科学(株洲)联合基金项目(2018JJ4082); 湖南省教育厅重点项目(18A077); 教育部留学回国人员科研启动基金(教外司留［2015］1098号)

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出版历程
- 收稿日期: 2019-06-29
- 刊出日期: 2020-01-28

Aerodynamic robustness of centrifugal compressor impeller under multi-source uncertainty coupling

School of Mechanical Engineering,Xiangtan University,Xiangtan Hunan 411105,China

摘要

摘要: 考虑制造误差与气动边界多源不确定耦合作用,以某离心压气机叶轮为研究对象,将数值计算方法、拉丁超立方试验、代理模型与蒙特卡洛方法相结合,分析几何设计变量与性能参数的相关程度,量化叶轮制造误差与转速波动的不确定性对压气机性能的影响程度,提出一种考虑多维异性不确定因素的离心压气机叶轮气动稳健优化设计方法。结果表明:在制造误差和转速不确定耦合作用下,压比波动幅度由350%增大至1414%;优化后叶轮气动稳健性增强,压比和效率均值分别提高69%和46%,标准差分别降低154%和184%。
- 离心式压气机 /
- 制造误差 /
- 转速波动 /
- 多目标优化 /
- 气动稳健性
Abstract: Considering the manufacturing error and aerodynamic boundary multi-source uncertainty coupling, taking a centrifugal compressor impeller as the research object, the numerical calculation method, the Latin hypercube test design method, the surrogate model, and the Monte Carlo method were combined to analyze the correlation of geometric design variables and performance. The influences of impeller manufacturing error and speed fluctuation on compressor performance were quantified. An aerodynamic robust optimization design method for centrifugal compressor impeller was proposed for considering multi-dimensional diverse uncertain factors. Results showed that, under the coupling effect of manufacturing error and speed uncertainty, the fluctuation range of pressure ratio increased from 350% to 1414%. The aerodynamic robustness was enhanced after optimization, the mean value of pressure ratio and isentropic efficiency increased by 69% and 49%, respectively, and the standard deviation of pressure ratio and isentropic efficiency decreased by 154% and 184%, respectively.
- centrifugal compressor /
- manufacturing error /
- speed fluctuation /
- multi-objective optimization /
- aerodynamic robustness

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