International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Study on the Aerodynamic Characteristics of Wings Flying Over the Nonplanar Ground Surface

  • Han, Cheol-Heui (School of Mechanical Engineering Hanyang University) ;
  • Lee, Kye-Beom (School of Mechanical Engineering Hanyang University) ;
  • Cho, Jin-Soo (School of Mechanical Engineering Hanyang University)
  • Published : 2002.11.30
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Abstract

Aerodynamic analysis of NACA wings moving with a constant speed over guideways are performed using an indirect boundary element method (potential-based panel method). An integral equation is obtained by applying Green's theorem on all surfaces of the fluid domain. The surfaces over the wing and the guideways are discretized as rectangular panel elements. Constant strength singularities are distributed over the panel elements. The viscous shear layer behind the wing is represented by constant strength dipoles. The unknown strengths of potentials are determined by inverting the aerodynamic influence coefficient matrices constructed by using the no penetration conditions on the surfaces and the Kutta condition at the trailing edge of the wing. The aerodynamic characteristics for the wings flying over nonplanar ground surfaces are investigated for several ground heights.

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References

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