压气机失速研究及设计方法的讨论  

Stall Investigation and Design Improvement of a Turbocharger-compressor

作　　者：冀春俊[1] 范苏月[1] 王澄宇 刘卫兵 

机构地区：[1]大连理工大学,辽宁大连116024 [2]中国露笑集团公司,浙江诸暨311814

出　　处：《内燃机与动力装置》2010年第2期1-4,共4页Internal Combustion Engine & Powerplant

摘　　要：本文利用NREC软件对某存在严重失速问题的高速压气机进行重新设计,并通过流体分析软件Numeca进行了数值模拟验证。流动分析结果表明压气机内有较强的失速从而对于叶片的安全性构成了致命的威胁;本文通过改进叶片的弯转角变化规律和短叶片的设计,有效地避免了失速,对于改进叶轮的可靠性做出了有益的探索。Based on CFD technical and Numeral/NREC software,the three dimensional flow in a high speed compressor with split blade was analyzed in this paper.Results indicate that strong stalls in the impeller passages may bring a great hazard to the safety of the blades.Study of the stall pattern found out that the stalls are closely related with the flow angle distribution and the design of the short blade.By control to the flow angle and the short blade design,the stall can be avoided successfully.The study is good for the improvement of the reliability of the impellers.

关 键 词：压气机 长短叶片 数值模拟 

分 类 号：TH452[机械工程—机械制造及自动化]