Flow Control of the Stalled S809 Airfoil With the Separated Jet Flow Device

被引：0

作者：

Shi, Xu-Yang ^{[1
,2
]}

Sun, Jin-Jing ^{[1
,2
]}

Xu, Bin ^{[1
,2
]}

Huang, Dian-Gui ^{[1
,2
]}

机构：

[1] School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai,200093, China

[2] Shanghai Key Laboratory of power energy in multiphase flow and heat transfer, Shanghai,200093, China

来源：

Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | 2021年 / 42卷 / 03期

关键词：

Drag - Lift drag ratio - Momentum - Numerical models - Lift - Airfoils;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The flow control effect of a separated jet flow device set around the S809 airfoil suction surface at Re=5×106 was discussed by numerical simulation. The momentum coefficient of jet flow, the length of jet-port and initial position of the separated jet flow device are three main parameters to be considered in this paper. A physical analysis of the flow fields is performed to illustrate the mechanisms of flow control for the improvement of airfoil aerodynamic performance. Numerical results suggest that: when the length of jet-port and initial position of the separated jet flow device were fixed, the momentum coefficient of jet flow has a significant impact on control effect: after the separated jet flow device set around the S809 airfoil suction surface, a small control effect can be achieved even the momentum coefficient of jet flow was set as zero; bigger momentum coefficient of jet flow corresponds to smaller scale of separation bubble, lower drag coefficient, higher lift coefficient and higher lift-to-drag ratio when the length of jet-port and initial position of the separated jet flow device were fixed. It is worth noting that the length of jetport and initial position of the separated jet flow device also have a significant impact on control effect. © 2021, Science Press. All right reserved.

引用

页码：601 / 610