An experimental study of effects of inflow condition to boundary layer of an ultra-high-lift LPT at unsteady state

被引：0
|
作者：
Sun S. [1 ,2 ]
Lei Z.-J. [2 ]
Lu X.-G. [2 ]
Zhao S.-F. [2 ]
Zhu J.-Q. [2 ]
机构：
[1] College of Aeronautical Engineering, Civil Aviation University of China, Tianjin
[2] Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing
来源：
| 1600年 / Journal of Propulsion Technology卷 / 37期
关键词：
Boundary layer; Low pressure turbine; Separation; Transition; Upstream wakes;
D O I：
10.13675/j.cnki.tjjs.2016.04.008
中图分类号：
学科分类号：
摘要：
In order to study the interaction mechanism of the wakes and boundary layer and the influence on profile loss due to the wakes, the effects of unsteady wakes on an ultra-high-lift after loaded low pressure turbine blade IET-LPTA have been investigated experimentally. The measurement is performed on a low speed linear cascade wind tunnel. The upstream wakes is simulated by the moving cylindrical bars upstream of the cascade. The three holes aerodynamic probe and hotwire probe are used as the measurement instrument. The separation bubble on the suction side is suppressed efficiently and profile loss is decreased by the upstream wakes at low Reynolds number. The effects of Reynolds number and free stream turbulence intensity (FSTI) on the mechanism of interaction between upstream wakes and boundary layer have also been investigated. The effect of Re is one-way beneficial to the profile loss and FSTI is in both ways. © 2016, Journal of Propulsion Technology. All right reserved.
引用
收藏
页码：653 / 661
页数：8
相关论文
共 12 条
  • [1] Hodson H.P., Howell R.J., The Role of Transition in High-Lift Low-Pressure Turbines for Aero-Engines, Progress in Aerospace Sciences, 41, pp. 419-454, (2005)
  • [2] Curtis E.M., Hodson H.P., Banieghbal M.R., Et al., Development of Blade Profiles for Low-Pressure Turbine Applications, ASME Journal of Turbomachinery, 119, 3, pp. 531-538, (1997)
  • [3] Howell R.J., Wake Separation Bubble Interactions in Low Reynolds Number Turbomachinery, (1999)
  • [4] Haselbach F., Schiffer H.P., Horsman M., Et al., The Application of Ultra High Lift Blade in the BR715 LP Turbine, ASME Journal of Turbomachinery, 124, 1, pp. 45-51, (2002)
  • [5] Cumpsty N.A., Dong Y., Li Y.S., Compressor Blade Boundary Layers in the Presence of Wakes
  • [6] Halstead D.E., Wisler D.C., Okiishi, Et al., Boundary Layer Development in Axial Compressor and Turbines. Part 3 of 4-LP Turbines, ASME Journal of Turbomachinery, 119, 2, pp. 225-237, (1997)
  • [7] Feng T., Cheng H.-G., Yang L., Receptivity of Boundary Layer to Reynolds Number, Journal of Propulsion Technology, 25, 4, (2005)
  • [8] Qiao W.-Y., Zhao L., Luo H.-L., Measurement of the Transition and Separation for Turbine Blade Boundary Layer with Low-Reynolds Number, Journal of Propulsion Technology, 27, 12, (2010)
  • [9] Popovic I., Zhu J., Dai W., Et al., Aerodynamics of a Family of Three Highly Loaded Low-Pressure Turbine Airfoils: Measured Effects of Reynolds Number and Turbulence Intensity in Steady Flow
  • [10] Houtermans R., Coton T., Arts T., Aerodynamic Performance of a Very High Lift LP Turbine Blade with Emphasis on Separation Prediction, ASME Journal of Turbomachinery, 126, 3, pp. 406-413, (2004)
12