Effect of Slot at Blade Root on Compressor Cascade Performance under Different Aerodynamic Parameters

Applied Sciences

Yumeng Tang¹  Lipeng Lu¹  Yangwei Liu¹  Jinjing Sun¹ 

[1] National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beihang University, Beijing 100191, China;

关键词: slot;    aspect ratio;    pitch-chord ratio;    blade fillet;    flow control;    corner separation;    compressor cascade;   

DOI  :  10.3390/app6120421

来源: DOAJ

【 摘 要 】

The effects of compressor aerodynamic parameters, such as pitch-chord ratio, aspect ratio, and fillet, on the cascade performance have been studied in this paper. Slot configuration at the root of the blade has been proved to be an efficient passive control method for the corner separation control in compressor cascade. The combined effects of the pitch-chord ratio, aspect ratio, and blade fillet with a slot configuration on the blade, have also been studied. Larger corner separation caused by the high pitch-chord ratio can be eliminated by the slot, which leads to fewer blades with almost the same or even better cascade performance. Various aspect ratios, together with the slot configuration, have been investigated and all of them have a positive effect on the cascade performance. For the blade with the blade fillet, the slot still has a positive effect on the control of the corner separation, while cascade performance with just a slot configuration is better than the slot configuration under the influence of the blade fillet.

【 授权许可】

Unknown