静叶片时序效应对压气机叶片非定常气动负荷的影响  

Effects of stator clocking on unsteady aerodynamic loads of a compressor blade

作　　者：颜培刚[1] 李绍斌[2] 陈浮[1] 王仲奇[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001 [2]北京航空航天大学航空发动机气动热力重点实验室,北京100083

出　　处：《航空动力学报》2008年第1期117-124,共8页Journal of Aerospace Power

基　　金：国家自然科学基金重点项目(50236020)

摘　　要：采用数值方法对两级低速压气机中径处的流场进行非定常模拟。研究第二排静叶在两个典型周向位置上的叶片气动负荷,分析各列叶栅气动负荷的非定常波动以及静叶时序效应对叶栅气动负荷的影响。对各列叶栅的非定常气动力和气动力矩进行频谱分析,探讨叶列间的非定常气动干扰。结果表明,时序效应对静叶片气动负荷的影响明显高于动叶片的。时序效应能够提高压气机的性能与叶片寿命.Numerical simulation was applied to the unsteady flow at the mid span of a two-stage low-speed compressor. The aerodynamic load of the second row of stator blade at two typical circumferential positions was investigated. The influence of unsteady aerodynam- ic load of each blade cascade and the stator clocking effect on blade aerodynamic load was also analyzed. Through spectrum analysis of the unsteady aerodynamic forces and moments of each blade cascade, the unsteady aerodynamic interferences between blades were discussed. The results show that, the influence of stator clocking effects on the stator blade＇s unsteady aerodynamic loads is larger than that on the rotor blade. Stator clocking effect can help improve the compressor performance and its blade service life.

关 键 词：航空 航天推进系统 时序效应 非定常干扰 气动负荷 压气机 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]