Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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AERODYNAMIC CHARACTERISTICS OF NACA64-418 AIRFOIL WITH BLUNT TRAILING EDGE ACCORDING TO THE SHAPE OF TRAILING EDGE

뒷전 두께를 갖는 NACA64-418 익형의 꼬리형상에 따른 공력특성

  • Yoo, H.S. (Dept. of Mechanical Engineering, Andong Nat'l Univ.) ;
  • Lee, J.C. (Dept. of Mechanical Engineering, Andong Nat'l Univ.)
  • Received : 2014.11.10
  • Accepted : 2014.12.08
  • Published : 2014.12.31
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Abstract

The aerodynamic performance of a modified NACA64-418 with blunt trailing edges of irregular shape was investigated. As the trailing edge of the airfoil was thickened, the drag of the airfoil was increased due to development of a re-circulation bubble in the wake region. To reduce the drag of the airfoil with a blunt trailing edge, the optimum shape of the trailing edge for a modified NACA64-418 was investigated. The numerical results showed that the drag of the protruding shape was much more decreased than that of the retreating shape, but the lift was almost the same regardless of shape. In addition, the pitching moment of the modified NACA64-418 with a protruding sharp trailing edge was the smallest at the given angle of attack.

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References

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