Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Analysis of Steady and Unsteady Performance for 3-D Surface Effect Wing

3차원 표면효과익의 정상 및 비정상 성능해석

  • 박일룡 (부산대학교 조선해양공학과 대학원) ;
  • 전호환 (부산대학교 조선해양공학과(기계기술연구소))
  • Published : 1998.08.01
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Abstract

This paper describes the numerical modelling for the steady and unsteady forces of 3-D wings flying near the free surface based on a potential based panel method. For the steady problem where a wing flies over the fixed float surface, steady lift and drag forces are calculated for wings with and without end-plates having different sections, angle of attacks, aspect patios and flying heights. These numerical results are compared with the wind tunnel test results. The unsteady problem is treated as a boundary value one where a wing flies over the described wavy surface. The unsteady lift force variations of a wing due to different wave lengths and heights are calculated at different flying heights.

본 논문은 자유수면 위를 가까이 비행하는 표면효과익선(Wing-in Ground Effect Craft)의 날개에 작용하는 정상(steady) 및 비정상(unsteady) 동유체력을 포텐셜 기저 패널법을 사용하여 수치해석을 수행한 결과이다. 파가 없는 고정수면 위를 비행하는 정상문제의 경우에 대해서는 단면변화, 앙각(angle of attack), 가로-세로비(aspect ratio), 날개 끝단판(end-plate)의 부착 유무 및 비행고도에 따른 양력 및 항력을 계산하여 풍동실험 결과와 비교하였다. 비정상문제에서는 이미 정의된 파표면 위를 표면효과익이 날아가는 경계치 문제로 해석하였다. 파장, 파고, 비행고도의 변화에 따른 날개에 작용하는 비정상 동유체력을 계산하여 파가 있을 경우 표면효과의 영향을 살펴보았다.

Keywords

References

  1. T. of the West-Japan Sodiety of naval Architects v.83 Free Surface Effect on Characteristics of Two Dimensional Wing Kataoka;K. Ando J.;Nakatake K.
  2. Journal Ocean Engineering and Technology v.9 no.2 A Study on Free Surface Effect of 2-D Airfoils Park I. R;Chun H. H.
  3. Proceedings of the annual Spring Meeting The Society of naval Architects of Korea Optimization of 3-Dimensional Wing in Surface Effect using the Surface Panel method Kim Y. G;Jeon J. Y;Jang H. S
  4. Journal of the Society of Naval Architects of Japan no.174 Numerical Analysis of 3-D WIG Advancing over the Still Water Surface Mizutani N;Suzuki K.
  5. Journal of Japan Soc. Aero. Space Sci. v.451 no.39 Analysis of a 2-D Airfoil Motion Flying In-Proximity-to a Wavy Wall Surface Finite Difference method Nitta K;Ando S.
  6. Journal Ocean Engineering and Technology v.9 no.2 Numerical Simulation of Unsteady Performance for 2-D Surface Effect Airfoils Park I. R.;Chun H. H.
  7. Subsonic Potential Aerodynamics for Complex Configuration: A General Theory Morino L;Kuo C. C.
  8. Ph.D. Thesis,Dept of Ocean Engineering,MIT,USA A Potential based Panel method for the Analysis of Marine Propellers in Steady Flow Lee J. T.
  9. Proc. of 2rd Korea-japan Joint Workshop on Ship & marine Hydrodynamics Experimental Investigations on Wing in Ground Effect Chun H. H.(et al.)
  10. Private communication with the 2nd author Sinitsyn D. N