首页 | 本学科首页   官方微博 | 高级检索  
     检索      

弯曲叶片对压气机轮毂-角区失速的影响
引用本文:罗 钜,胡 骏,李 亮,等.弯曲叶片对压气机轮毂-角区失速的影响[J].南京航空航天大学学报,2012,44(2):139-145.
作者姓名:罗 钜  胡 骏  李 亮  
作者单位:南京航空航天大学能源与动力学院,南京,210016
摘    要:为了数值模拟弯曲静子对某两级低速轴流压气机总体性能及轮毂-角区失速的影响,选取了第1级静子进行弯曲。弯曲静子积叠线为贝塞尔曲线-直线-贝塞尔曲线(Bezier-line-Bezier,BLB)形式,弯高为20%叶片高度,弯角为10,15,20,25和30°。结果表明,弯曲叶片能有效抑制小流量范围内的轮毂-角区失速,从而改善压气机的性能。过度的弯曲会带来较大的叶型损失,从而导致大流量工况下压气机效率有所下降。扩散因子不能作为判断轮毂-角区失速是否存在的主要依据。

关 键 词:弯曲叶片  数值模拟  轮毂-角区失速

Bowed Blade Effect on Hub-Corner Stall
Luo Ju , Hu Jun , Li Liang , Zhao Yunsheng.Bowed Blade Effect on Hub-Corner Stall[J].Journal of Nanjing University of Aeronautics & Astronautics,2012,44(2):139-145.
Authors:Luo Ju  Hu Jun  Li Liang  Zhao Yunsheng
Institution:(College of Energy and Power Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing,210016,China)
Abstract:A numerical simulation is performed to analyze the effect of first stage bowed stator with different bowed angles on the total performance and the hub-corner stall for a two-stage low speed axial compressor.Bezier-line-Bezier(BLB) curve is chosen as the stacking line.The bowed height of BLB is 20% of blade height and the bowed angles are 10,15,20,25 and 30°.The result shows that bowed blade can suppress the hub-corner stall at low flow rate,thus increaing the efficiency.Moreover,excessive bow can cause bigger profile loss,which decreases the efficiency at high flow rate.Diffusion factor based on the two-dimensional airfoil separation data cannot be used as the criterion to predict the hub-corner stall.
Keywords:bowed blade  numerical simulation  hub-corner stall
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《南京航空航天大学学报》浏览原始摘要信息
点击此处可从《南京航空航天大学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号