Numerical Study of Flow Separation Control over a OA209 Airfoil Using Deployable Vortex Generator

2011 ◽  
Author(s):  
Gilles Joubert ◽  
Arnaud Le Pape ◽  
Serge Huberson
Keyword(s):  
Flow Separation ◽  
Numerical Study ◽  
Vortex Generator ◽  
Separation Control ◽  
Flow Separation Control

Study on Flow Separation Control by Vortex Generator Jets with Different Parameters

2012 ◽  
Vol 588-589 ◽  
pp. 1786-1789
Author(s):  
Yong Hui Xie ◽  
Zhong Yang Shen ◽  
Tao Fan
Keyword(s):  
Flow Control ◽  
Flow Separation ◽  
Vortex Generator ◽  
Separation Control ◽  
Flow Separation Control ◽  
Profound Influence ◽  
Orthogonal Analysis ◽  
Conical Diffuser ◽  
Flow Charts ◽  
Vortex Generator Jets

In order to investigate the mechanism of flow separation control in conical diffuser by vortex generator jets (VGJs) method, numerical simulations were conducted to discuss the effect of VGJs with different parameters on flow control. The aerodynamic performance in conical diffuser with angle of 14° was tested and analyzed based on Shear-Stress-Transport (SST) simulation. The flow charts at several sections were analyzed, illuminating the formation of complex vortices. Moreover, the effects of 5 VGJs parameters on the diffuser were analyzed by orthogonal analysis. It was shown that the number of jets and the pitch angle of jet showed more profound influence on the flow control by VGJs.

Numerical study of passive and active flow separation control over a NACA0012 airfoil

2008 ◽  
Vol 37 (8) ◽  
pp. 975-992 ◽  
Author(s):  
Hua Shan ◽  
Li Jiang ◽  
Chaoqun Liu ◽  
Michael Love ◽  
Brant Maines
Keyword(s):  
Flow Separation ◽  
Numerical Study ◽  
Separation Control ◽  
Flow Separation Control ◽  
Naca0012 Airfoil ◽  
Active Flow

Vortex generator jets - Means for flow separation control

AIAA Journal ◽  
1990 ◽  
Vol 28 (6) ◽  
pp. 989-994 ◽  
Author(s):  
James P. Johnston ◽  
Michihiro Nishi
Keyword(s):  
Flow Separation ◽  
Vortex Generator ◽  
Separation Control ◽  
Flow Separation Control ◽  
Vortex Generator Jets

Numerical Investigation of Three-dimensional Separation Control on a High-speed Compressor Stator Vane with Tailored Synthetic Jet

2020 ◽  
Vol 37 (4) ◽  
pp. 383-397 ◽  
Author(s):  
Yong Qin ◽  
Yanping Song ◽  
Ruoyu Wang ◽  
Huaping Liu
Keyword(s):  
Flow Control ◽  
Flow Separation ◽  
High Speed ◽  
Numerical Study ◽  
Three Dimensional ◽  
Synthetic Jet ◽  
Separation Control ◽  
Flow Separation Control ◽  
Control Efficiency ◽  
Stator Vane

AbstractA numerical study on the performance of synthetic jet for flow separation control on a high-speed compressor stator vane is performed. Four control schemes including full-span and part-span configurations are investigated at both design and off-design conditions. Results indicate that both full-span and part-span schemes could effectively delay flow separation and reduce total pressure loss for the compressor stator vane, the adaptability of the flow control under off-design conditions is also validated. Within the investigated incidence range, the full-span configuration is able to gain the most significant performance improvement, by which a maximum loss reduction of 23.8 % is obtained at i=2 deg. The part-span configuration could reorganize the vortex structures more efficiently and cut off the interaction between the ring-like vortex and the passage vortex, thus improving its performance in the corner region. In terms of flow control efficiency, the part-span configurations turn out to be more superior, where the highest control efficiency of 614.0 % is achieved at i=0 deg with the total height of the actuator being 40 %H. The flow control efficiency for all the schemes is higher than 100 % within the whole operating range, demonstrating a promising prospect for the application of synthetic jet in axial compressors.

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