微小流量离心压缩机叶轮流场性能模拟计算

花严红; 袁卫星; 袁修干; 杨春信; 陈江

微小流量离心压缩机叶轮流场性能模拟计算

1.
北京航空航天大学航空科学与工程学院, 北京 100191
2.
九江职业技术学院, 机电设备系, 九江 332007
3.
北京航空航天大学能源与动力工程学院仿真中心,北京 100191

基金项目: 航空科学基金(02E51039)

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出版历程
- 收稿日期: 2007-10-16
- 修回日期: 2008-01-15
- 刊出日期: 2008-10-28

Numerical simulation of the flow-field and performance of amicro-flowrate centrifugal compressor impeller

1.
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2.
Departmant of Electromechanical Equipment, Jiujiang Vocational and Technical College, Jiujiang 332007, China
3.
Simulation Center, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 设计了一种空气工质低压比的微小流量、高转速离心压缩机三元叶轮,并对其流场特性进行数值模拟.研究表明:该类叶轮出口与进口区域面积比小于1;采用高转速可以改善该类叶轮的效率;叶轮的最佳叶片数较源于大流量低转速离心压缩机理论的叶片数经验公式计算值要小;叶轮出口角一般在60°以上;叶尖顶部间隙增大时,叶轮总压比及效率显著下降.研究方法和结果为飞机高性能空气循环制冷系统和蒸汽压缩制冷系统中微小流量高转速离心压缩机的工程化设计提供了有益的参考.
- 微小流量 /
- 高转速 /
- 离心压缩机 /
- 叶轮 /
- 性能
Abstract: A 3-D impeller for a micro-flowrate high-speed centrifugal air compressor(MHCAC) was designed and the performance of flow field was numerically studied.The results show that the ratio of outlet to inlet area of MHCAC impellers is less than 1.0,the efficiency of a micro-flowrate centrifugal compressor can be improved by high rotating speed;the optimum number of blades of MHCAC impellers is less than that given by empirical formula originated from the theory of high-flowrate-low-speed centrifugal compressor;the outlet angle of a MHCAC impeller is generally bigger than 60°;the overall pressure ratio and efficiency of the impeller decrease with the increase of tip clearance.The methods and results of this paper provide valuable reference for engineering design of a MHCAC in aircraft air-cycle or vapor compression refrigeration systems.
- micro-flowrate /
- high-speed /
- centrifugal compressor /
- impellers /
- performance

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参考文献(12)

[1]	叶振帮,常鸿寿.离心式制冷压缩机[M].北京:机械工业出版社,1980:1-11,91-92.
[2]	于志强,袁卫星.高转速离心式制冷压缩机研究现状及前景[J].制冷与空调,2005,5(3):1-3.YU Zhiqiang,YUAN Weixing.Current state of high rotation speed centrifugal compressor[J].Refrigeration and Air-Conditioning,2005,5(3):1-3.(in Chinese)
[3]	Krain H.A CAD method for centrifugal compressor impellers[J].Transaction of ASME,Journal of Engineering for Gas Turbines and Power,1984,106(2):150-157.
[4]	Hathaway M D,Chriss R M,Wood J R,et al.Laser anemometer measurements of the three-dimensional rotor flow field in the NASA Low-Speed centrifugal compressor JR3.NASA Technical Paper 3527,June 1995.
[5]	席光,王晓锋,蒋三红,等.基于三维粘性流动分析的离心压缩机叶轮设计方法[J].工程热物理学报,2002,23(增刊):55-57.XI Guang,WANG Xiaofeng,JIANG Sanhong,et al.Design method of centrifugal compressor impellers based on 3-D viscous flow analysis[J].Journal of Engineering Thermophysics,2002,23(Supplement):55-57.(in Chinese)
[6]	初雷哲,杜建-,汤华,等.计及几何参数变化的离心压缩机特性分析[J].工程热物理学报,2006,27(3):405-407.CHU Leizhe,DU Jianyi,TANG Hua,et al.Charcteristic analysis of a centrifugal compressor with different geometry parameters[J].Journal of Engineering Thermophysies,2006,27(3):405-407.(in Chinese)
[7]	缪骏,谷传纲,王彤,等.PDA技术在离心压缩机叶轮内部流场测量中的应用[J].通用机械,2003,4:66-68.MIU Jun,GU Chuangang,WANG Tong,et al.Application of PDA technique in the measurement of flow field inside centrifugal compressor impellers[J].General Machinery,2003,4:66-68.(in Chinese)
[8]	杨策,施新.径流式叶轮机械理论及设计[M].北京:国防工业出版社,2004.
[9]	Gui F L,Reinarts T R,Searnge R P.Design and experimental study of high-speed low-flow-rate centrifugal compressors[R].IECEC Paper No.CT-39,ASME 1995.
[10]	Hathaway M D,Chriss R M,Wood J R,et al.Esperimental and computational investigation of the NASA lowspeed centrifugal compressor flow field[J].ASME Journalof Turbomachinery,1993,115(3):527-542.
[11]	张楚华,王宝潼,栾辉宝,等.叶顶间隙对离心叶轮气动性能影响研究EJl.流体机械,2006,34(12):13-16.ZHANG Chuhua,WANG Baotong,LUAN Huibao,et al.Study of influence of tip clearance on aerodynamic performance of centrifugal impeller[J].Fluid Machinery,2006,34(12):13-16.(in Chinese)
[12]	杨策,马朝臣,王航,等.离心压缩机叶轮设计方法研究进展[J].内燃机工程,2002,23(2):54-59.YANG Ce,MA Chaochen,WANG Hang,et al.Centrifugal compressor design methods progress[J].Chinese Internal Combustion Engine Engineering,2002,23(2):54-59.(in Chinese)