Periodic Aerodynamic Response of Axial Fan Rotor Blades to Nonuniform Inlet Flow Fields
Periodic Aerodynamic Response of Axial Fan Rotor Blades to Nonuniform Inlet Flow Fields
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DOI：
10.1115/96-gt-401
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发表时间：
1996-06
期刊：
影响因子：
--
通讯作者：
M. Staiger;H. Stetter
中科院分区：
文献类型：
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作者：
M. Staiger;H. Stetter
在低速压气机与风机研究中心，对单级低速轴向研究压气机转子叶片在尾流型进口气流扰动下的气动响应进行了实验研究。研究包括5个孔压力探头测量转子进出口平面的非均匀流场，以及安装在转子叶片上的“快速响应”微型压力传感器直接记录非定常表面压力响应。根据入口流动特性的周向和径向分布确定了方向和横向阵风速度的强迫函数。记录了沿跨和沿弦不同位置叶片表面非定常气动响应的压力变化历史。研究了定常级载荷对非定常转子叶片响应和力函数的影响。在跨中处，记录的局部叶片表面压力历史被整合成一个跨向非定常叶片力系数，该非定常叶片力系数与通过二维线性化非定常气动分析得到的计算力系数相关联。ASME版权所有©1996
An experimental investigation of the aerodynamic response of the rotor blading of a single stage low speed axial research compressor, which was exposed to wake type inlet flow disturbances was carried out at the Institute’s low speed compressor and fan research facility. The investigation comprised 5 hole pressure probe surveys of the nonuniform flow field at the rotor inlet and exit planes as well as direct recording of the unsteady surface pressure response by rotor blade mounted ‘fast response’ miniature pressure transducers. Forcing functions in terms of streamwise and transverse gust velocities were determined from the circumferential and radial distribution of the inlet flow properties. The blade surface pressure history of the unsteady aerodynamic response was recorded at several locations along span and along chord. The influence of steady stage loading on the forcing function as well as on the unsteady rotor blade response was investigated. At midspan the recorded local blade surface pressure histories were integrated to a spanwise unsteady blade force coefficient, which was correlated to a calculated force coefficient determined by a two-dimensional linearized unsteady aerodynamic analysis.Copyright © 1996 by ASME