Browse > Article
http://dx.doi.org/10.5139/JKSAS.2018.46.1.10

Experimental Study on Synthetic Jet Actuators for Separation Delay  

Kwon, O-Hyun (Korea Aerospace University)
Byun, Seon-Woo (Korea Aerospace University)
Roh, Jin-Ho (Korea Aerospace University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.46, no.1, 2018 , pp. 10-17 More about this Journal
Abstract
The size of commercial wind turbines has been increased. Generally, the pitch control is used to increase the efficiency of wind turbine. However, the pitch control has difficulty to control the local unsteady flow control which makes fatigue load and decreases the efficiency. In this research, Synthetic Jet Actuators(SJAs) are manufactured and applied into a wing section to delay flow separation and increase aerodynamic performances. The SJAs as a kind of zero-net mass-flux actuators injects and removes fluid through a small orifice with a given frequency. The SJA modules actuated by piezoelectric disks are manufactured and the aerodynamic performances are measured according to the shape of the orifice and the velocity of the jets through the wind tunnel test. It is confirmed that as the velocity of the jets are increased using rectangular shape orifice, drag force is decreased and lift force in increased.
Keywords
Delaying Separation; Active Flow Control; Synthetic Jet Actuators;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Hansen, M. O. L., et al. "State of the art in wind turbine aerodynamics and aeroelasticity," Progress in aerospace sciences, Vol. 42, No. 4, 2006, pp.285-330.
2 Barlas, Thanasis K., and G. A. M. Van Kuik. "Review of state of the art in smart rotor control research for wind turbines," Progress in Aerospace Sciences, Vol. 46, No. 1, 2010, pp.1-27.
3 http://smart-blade.com/products-services/vortex-generators.html
4 Seshagiri, Amith, Evan Cooper, and Lance W. Traub. "Effects of vortex generators on an airfoil at low Reynolds numbers," Journal of Aircraft, Vol. 46, No. 1, 2009, pp.116-122.   DOI
5 In-Su Kang., Dong Liu., Hyoung-Bum Kim,. "Experimental Study of the Vertical Fence Wake Control using Vortex Generators," Journal of the Korean Society of Mechanical Engineers, November 2009, pp.2190-2194
6 Nelson, R. C., et al. "A smart wind turbine blade using distributed plasma actuators for improved performance," Proceedings of the 46th Aerospace Sciences Meeting, Jan, 2008, pp. 7-10.
7 Alan, M. L. "Experimental Study of Delay of Separation on a NACA 0015 Wing Model Using Synthetic Jet Actuators," PhD Thesis. California Polytechnic State University, 2014.
8 Mejia, O. D. L. "Computational Study of a NACA4415 airfoil using synthetic jet control," The University of Texas at Austin, 2009.
9 Tang, Hui, and Shan Zhong. "Development of a prediction model for synthetic jets in quiescent conditions," AIAA, 2005, Paper 104.
10 Hassan, Ahmed. A., and Edwin A. Munts. "Transverse and near-tangent synthetic jets for aerodynamic flow control," AIAA, 2000, paper 4334.