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Meccanica

, Volume 50, Issue 6, pp 1481–1494 | Cite as

Three-dimensional suction flow control and suction jet length optimization of NACA 0012 wing

  • Kianoosh Yousefi
  • Reza Saleh
Article

Abstract

A three-dimensional suction flow control study was performed to investigate the aerodynamic characteristics of a rectangular wing with a NACA 0012 airfoil section. In addition, the optimum suction jet length was determined. In this study, the Reynolds-averaged Navier–Stokes equations were employed in conjunction with a k–ω SST turbulent model. Perpendicular suction was applied at the leading edge of the wing’s upper surface, with two different types of slot distributions: i.e., center suction and tip suction. The suction jet lengths were varied by 0.25–2 of the chord length, and the jet velocity was selected to be 0.5 times the freestream velocity. Most importantly, in both cases, the results indicated that the lift-to-drag ratio increased as the suction jet length rose. However, the improvement in aerodynamic characteristics was more pronounced with center suction, and these characteristics were extremely close to those of the case considering suction over the entire wing such that the jet length was equal to wingspan. Moreover, in the center suction case, vortexes frequently abated or moved downstream. Interestingly, under similar conditions, a greater number of vortexes were removed with center suction than with tip suction. Ultimately, when the jet length is less than half the wingspan, tip suction is the better of the two alternatives, and when the jet length is greater than half the wingspan, center suction is better suited.

Keywords

3D simulation NACA 0012 wing Flow control Suction Jet length 

Notes

Acknowledgments

The authors thank Dr. Mehrdad Jabbarzadeh, Dr. Majid Vafaei Jahan, and Mr. Soheil Namvar for providing vital resources for the supercomputer cluster. We also thank Dr. Behrooz Zafarmand for his valuable suggestions during the planning and development of this research.

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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, Mashhad BranchIslamic Azad UniversityMashhadIran

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