全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
科技导报  2015 

民用大涵道比风扇S2反问题设计

DOI: 10.3981/j.issn.1000-7857.2015.14.018, PP. 97-101

Keywords: 民用大涵道比风扇,S2,反问题,关键几何参数

Full-Text   Cite this paper   Add to My Lib

Abstract:

S2反问题法是重要的初始设计评估手段。通过选择合理的损失模型并进行验证,得到了适用于大涵道比风扇的S2反问题评估方法,并系统研究风扇关键几何参数对风扇气动效率的影响规律。结果表明当进口机匣半径增大到一定程度,增大半径对于风扇效率的改善已不明显;当进口轮毂比大于0.295时,风扇效率将急剧下降;流道形式采用等外径或近似等外径设计时,风扇具有更高的效率;而风扇出口尺寸的选择除满足流量系数的要求之外,还应考虑与下游部件的匹配,以提高整个压缩系统的效率。

References

[1]  Michael T T, Scott M J, et al. A probabilistic assessment of NASA ultra-efficient engine technologies for a large subsonic transport[C]. ASME Turbo Expo 2004, Vienna, Austria, June 14-17, 2004.
[2]  Michael T T, Scott M J. An updated assessment of NASA ultra-efficient engine technologies[C]. 17th International Symposium on Air Breathing Engines, Munich, Germany, September 4-9, 2005.
[3]  Baker N, Rolt A. New environmental friendly aero engine core concepts[C]. 18th International Symposium on Air Breathing Engines, Beijing, China, September 2-7, 2007.
[4]  Korsia J J. VITAL-European R&D program for greener aero-engines[C]. 18th International Symposium on Air Breathing Engines, Beijing, China, September 2-7, 2007.
[5]  梁春华. TECH56技术计划即将结束[J]. 航空发动机, 2004, 30(1): 46- 46. Liang Chunhua. TECH56 plane is coming to end[J]. Aeroengine, 2004, 30 (1): 46-46.
[6]  Came P M, Robinson C J. Centrifugal compressor design[J]. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 1999, 213(2): 139-155.
[7]  Johnsen I, Bullock R. Aerodynamic design of axial flow compressors[R]. Washington DC: NASA, 1965.
[8]  Koch C C, Smith L H. Loss sources and magnitudes in axial- flow compressors[J]. Journal of Engineering for Power, 1976, 98(3): 411-424.
[9]  Wisler D C. Loss reduction in axial flow compressors through low-speed model testing[J]. Journal of Engineering for Gas Turbines Power, 1985, 107(2): 354-363.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133