摘要
为研究离心压气机静叶通道造型对通道内部流场的影响,以某高压离心压气机静叶为研究对象,借助中弧线造型法、参数化建模与高精度代理模型加速造型优化设计,利用数据挖掘工具分析设计参数敏感性,归纳总结静叶通道的一般设计规律。结果表明,叶型造型参数与等熵效率相关性紧密,呈中度正相关,造型各变量之间相关性强,部分造型参数对静压效率有提升作用。最优造型结构显示,减小静叶进口气流角可缓解气流在吸力面分离涡的形成,减小静叶出口气流角可降低流动损失,加大叶栅中部至尾缘弯曲程度可缓解通道中部堵塞,改善离心压气机静叶通道的整体性能。造型优化后,在设计点仿真计算的级等熵效率提高了1.7%,压比在全工况下整体提高0.1。
In order to study the influence of the shape of the static blade channel of a centrifugal compressor on the internal flow field of the channel,a high⁃pressure centrifugal compres⁃sor static blade was taken as the research object,and the shape optimization design was accelerated by using the arc shape method,parameterized modeling,and high⁃precision surrogate model.Data mining tools were used to analyze the sensitivity of design parameters and summarize the general de⁃sign rules of the static blade channel.Results show that the correlation between blade shape parameters and isentropic ef⁃ficiency is close,showing a moderate positive correlation.The correlation between various shape variables is strong,and some shape parameters have an improving effect on static pressure efficiency.The optimal design structure shows that reducing the inlet airflow angle of the stationary blade can al⁃leviate the formation of separation vortices on the suction sur⁃face,reducing the outlet airflow angle of the stationary blade can reduce flow losses,and increasing the bending degree from the middle to the trailing edge of the blade can alleviate channel blockage in the middle,and improve the overall per⁃formance of the centrifugal compressor stationary blade chan⁃nel.After the optimization of the design,the isentropic effi⁃ciency of the simulation calculation at the design point increa⁃ses by 1.7%,and the overall pressure ratio increases by 0.1 under all operating conditions.
作者
李相君
朱政宇
周倩
郝佳埼
LI Xiangjun;ZHU Zhengyu;ZHOU Qian;HAO Jiaqi(Naval Architecture and Ocean Engineering College,Dalian Maritime University,Dalian 116026,China)
出处
《大连海事大学学报》
CAS
CSCD
北大核心
2024年第2期92-100,共9页
Journal of Dalian Maritime University
基金
国家自然科学基金面上项目(51906027)
辽宁省博士科研启动基金计划项目(2019-BS-027)
辽宁省教育厅基本科研项目(JYTMS20230160)。
关键词
离心压气机
静叶通道
造型优化
相关性分析
centrifugal compressor
stator vane passage
shape optimization
correlation analysis