한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제5권2호
  • /
  • Pages.56-63
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  • 2007
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  • 1598-8430(pISSN)
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  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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앞전 형상에 따른 삼각 날개의 공력 특성

Aerodynamic Characteristics of Delta Wing According to Leading Edge Geometries

  • 진학수 (순천대학교 대학원 기계공학과) ;
  • 김성초 (순천대학교 기계우주항공공학부) ;
  • 김정수 (순천대학교 기계우주항공공학부) ;
  • 최종욱 (순천대학교 기계우주항공공학부)
  • 발행 : 2007.12.30
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초록

Flow visualization and aerodynamic characteristics of delta wings with two different leading edge geometries are investigated by PIV system and wind tunnel balance when the Reynolds number is about based on the freestream velocity and the root chord length. Delta wing models have 65-deg swept angle, and the leading edge shapes are divided into round- and sharp- type. The experimental results indicated that the leading-edge vortex strength and aerodynamic coefficient in the round leading edge are stronger and more, respectively than those in the sharp one. Therefore the flow interactions between vortices and the boundary layer are more desirable or more rapidly swirled in the round-type leading edge.

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참고문헌

  1. Nelson, R. C. and Pelletier, A., 2003, "The Unsteady Aerodynamics of Slender Wings and Aircraft Undergoing Large," Progress in Aerospace Science, 39 pp. 185-248. https://doi.org/10.1016/S0376-0421(02)00088-X
  2. Earnshaw, P. B., 1961, "An Experimental Investigation of Structure of a Leading Edge Vortex," RAE Tech Note No. Aero. 2740.
  3. Payne F. M., Nelson R. C. and Schiff L. B., 1988, "Visualization and Wake Surveys of Vortical Flow over a Delta Wing," J. of Aircraft, Vol.26(2), pp. 137-143.
  4. Verhaagen, N. G. and Naarding, S. H. J., 1989, "Experimental and Numerical Investigation of the Vortex Flow over a Yawed Delta Wing," AIAA Paper 1988-2563
  5. Miau, J. J., Kuo K. T., Liu, W. H., Hsieh, S. J., Chou, J. H. and Lin C. K., 1995, "Flow Developments above 50-deg Sweep Delta Wings with Different Leadingedge Profiles," J. of Aircraft, Vol.32(4), pp. 787-794. https://doi.org/10.2514/3.46792
  6. Chu, J. and Luckring, J. M., 1996, "Experimental Surface Pressure Data Obtained on $65^{\circ}$ Delta Wing Across Reynolds Number and Mach Number Ranges," NASA TM-4645.
  7. Lee, K. Y. and Sohn, M. H., 2001, "Study on the Vortex Characteristics over a Delta Wing with Leading Edge Extension by Pressure Distribution Measurement," Trans. of the KSAS, Vol.29(8), pp. 18-25.
  8. Lee, K. Y. and Sohn, M. H., 2003, "The Vortical Flow Field of Delta Wing with Leading Edge Extension," KSME Int'l Journal, Vol.17(6), pp. 914-924.
  9. Lee, K. Y., Sohn, M. H. and Chung, G, S., 2003, "Velocity Field Measurements over a LEX/Delta Wing by Triple Axis Hot-Film Anemometry," Trans. of the KSAS, Vol.31(9), pp. 1-8 https://doi.org/10.5139/JKSAS.2003.31.9.001
  10. Lee, Y. K. and Kim, H. D., 2004, "Vortical Flows over a LEX Delta Wing at High Angles of Attack," KSME Int'l Journal, Vol.18(6), pp. 1042-1051.
  11. Sung, J. and Yoo, J. Y., 2001, "Three-Dimensional Phase Averaging of Time-Resolved PIV Measurement Data," Meas. Sci. Technol., Vol.12, pp. 655-662. https://doi.org/10.1088/0957-0233/12/6/301
  12. Kim, J. S., Sung, J., Kim, S. and Kim, J. S., 2006, "A Change of Three-Dimensional Vortical Structures by an Air Spoiler in the Wake of a Road Vehicle," Trans. of the KSVI, Vol.4(1), pp. 56-61.
  13. Jin, H. S., Kim, S., Kim, J. S., Choi, J. and Park, J., 2007, "Experiments on the Vortical Structures in a Delta Wing When the Geometry is Changed," 18th Int'l Symposium on Transport Phenomena, Daejon, Korea, 27-30 August, ISTP-250.