叶片前缘型线对SCO_(2)离心压缩机性能和类相变的影响  

Influence of Blade Leading Edge Profiles on the Performance and Quasi-phase Change in SCO_(2)Centrifugal Compressors

作　　者：童志庭 李亚男[1,2] 苏宏冉 南希 TONG Zhiting;LI Yanan;SU Hongran;NAN Xi(Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control,Tianjin University of Technology,Tianjin,China,300384;National Demonstration Center for Experimental Mechanical and Electrical Engineering Education,Tianjin University of Technology,Tianjin,China,300384;Aero Engine Academy of China,Beijing,China,101304)

机构地区：[1]天津理工大学天津市先进机电系统设计与智能控制重点实验室,天津300384 [2]天津理工大学机电工程国际级实验教学示范中心,天津300384 [3]中国航空发动机研究院,北京101304

出　　处：《热能动力工程》2025年第1期103-110,共8页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学面上项目(51976139)。

摘　　要：以某10 MW SCO_(2)离心压缩机叶片前缘型线为研究对象,采用数值模拟方法分析了椭圆轴比为1∶1,2∶1,3∶1,4∶1时的叶片前缘型线对压缩机性能和类相变的影响。结果表明∶压缩机的效率和压比都随椭圆轴比的增加而增加,随着椭圆轴比从1∶1增加至4∶1,压缩机最高效率从89.84%增加至90.28%,压缩机最高压比从2.422增加至2.438;增大叶片前缘的椭圆轴比可以削弱吸力峰,使低温低压区域减小,从而抑制凝结发生的可能性;增大叶片前缘的椭圆轴比会增强叶顶泄漏涡的流动,使低密度团的密度降低,类蒸发现象更为显著。Taking the leading edge profile of a 10 MW SCO_(2)centrifugal compressor blade as research ob-ject,the influence of leading edge profiles of the blades with different ellipticity axial ratios of 1∶1,2∶1,3∶1 and 4∶1 on performance and quasi-phase change of compressor was analyzed by using numerical sim-ulation methods.The results indicate that increasing the ellipticity axial ratio of the leading edge can in-crease the efficiency and pressure ratio of compressor.As the ellipticity axial ratio increases from 1∶1 to 4∶1,the maximum compressor efficiency increases from 89.84%to 90.28%,the highest pressure ratio increases from 2.422 to 2.438.Increasing the ellipticity axial ratio of the leading edge can reduce the suction peak and decrease the size of the low-temperature and low-pressure region,thereby suppressing the possibility of condensation occurring.However,increasing ellipticity axial ratio of leading edge of blade will increase the flow of tip leakage vortex,which can reduce the density of low-density clusters and make the phenomenon of quasi-evaporation more significant.

关 键 词：超临界二氧化碳 离心压缩机 布雷顿循环 叶片前缘型线 数值模拟 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]