Boundary layer separation control on a highly-loaded, low-solidity compressor cascade

• Published in: Journal of thermal science 2010-06, Vol.19 (2), p.97-104
• Main Authors: Zhou, Yang, Liu, Huo-xing, Zou, Zheng-ping, Ye, Jian
• Format: Article
• Language: English
• Subjects: Classical and Continuum Physics; Engineering Fluid Dynamics; Engineering Thermodynamics; Heat and Mass Transfer; Physics; Physics and Astronomy; 分离控制; 压力损失系数; 压气机叶栅; 影响因素; 控制技术; 数值模拟; 边界层高度; 高负载
• ISSN: 1003-2169; 1993-033X
• DOI: 10.1007/s11630-010-0097-2

Separated flow can be effectively controlled through the management of blade boundary layer development. Numerical simulations on a highly-loaded, low-solidity compressor cascade indicate that combined blowing and suction flow control technique can significantly improve cascade performance, especially in increasing the cascade loading and static pressure ratio as well as decreasing the loss coefficient. Meanwhile, it is more effective to improve cascade performance by blowing near leading edge on suction surface than suction near trailing edge. Both the locations and flow rates of blowing and suction are major impact factors of this method to cascade performance. Comparing to the baseline, the static pressure ratio increases by 15% and loss coefficient decreases by 80%, with a blowing fraction of 1.7% and a suction fraction of 1.38% of the inlet mass flow.