A flow control study of a supersonic mixing layer via NPLS

作者：Yi ShiHe; He Lin^*; Zhao YuXin; Tian LiFeng; Cheng ZhongYu

来源：Science in China - Series G: Physics Mechanics and Astronomy , 2009, 52(12): 2001-2006.

DOI：10.1007/s11433-009-0301-0

• supersonic mixing layer
• NPLS
• flow control

The flow control of a supersonic mixing layer was studied in a supersonic mixing layer wind tunnel with convective Mach number (Mc) at 0.5. The passive control of the mixing layer was achieved by perturbation tapes on the trailing edge of the splitter plate. The control effects of 2D and 3D perturbation tapes with different sizes were compared. The mixing layer was visualized via NPLS, and the transient fine structures were identifiable in NPLS images, which were used to analyze the effects of flow control. The results show that the 2D tapes can enhance the 2D characteristic of the mixing layer, delaying mixing layer transition; and the 3D tapes can enhance the 3D characteristic of the mixing layer, advancing mixing layer transition. 3D structures of the mixing layer were visualized, and the H-type A vortexes were found with 3D tapes control.

• 出版日期2009-12
• 单位中国人民解放军国防科学技术大学