한국소음진동공학회논문집 (Transactions of the Korean Society for Noise and Vibration Engineering)

  • 제20권2호
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  • Pages.115-121
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  • 2010
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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날개 명음소음에 관한 이론 및 실험 연구

Theoretical and Experimental Study on Airfoil Singing

  • 안병권 (충남대학교 항공우주선박해양공학부) ;
  • 이종현 (충남대학교 항공우주선박해양공학부) ;
  • 이욱 (충남대학교 항공우주선박해양공학부) ;
  • 최종수 (충남대학교 항공우주선박해양공학부)
  • 발행 : 2010.02.20
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초록

Periodic vortex separations generate periodic vertical forces acting on a trailing edge of an airfoil. When a natural frequency of the trailing edge of the airfoil is close to a vortex shedding frequency, an amplitude of the edge oscillation becomes maximal; it makes intensive noise called singing. Motion of the trailing edge may also feedback to the vortex shedding so that self-sustained oscillation appears, and a resonant frequency is locked in some interval of the speed of the incident flow. In this study, a theoretical model is proposed and applied for modeling an airfoil singing. Results are compared with experimental measurements which are carried out in an anechoic wind tunnel.

키워드

참고문헌

  1. Blake, W. K., 1984, "Mechanics of Flow Induced Sound and Vibration," Vol. I and II, Academic Press, Inc.
  2. Rockwell, D., 1998, “Vortex-body Interactions,” Annu. Rev. Fluid Mech. Vol. 30, pp. 199-299. https://doi.org/10.1146/annurev.fluid.30.1.199
  3. Kim, D. H. and Chung, K. Y., 1994, "A Study on the Propeller Blade Singing Place of an 86,000 Ton Deadweight Crude Oil Tanker," Transaction of the Society of Naval Architects of Korea, Vol. 31, No. 3, pp. 59-64.
  4. Kim, Y. J., Lee, H. Y., Nho, I. S. and Lee, C. S., 2005, "Experimental Method for the Identification of the Propeller Blade Vibration Characteristics," Journal of the Society of Naval Architects of Korea, Vol. 42, No. 2, pp. 136-141. https://doi.org/10.3744/SNAK.2005.42.2.136
  5. Park, H., Kim, N. and Choi, S., 2004, “The Identification of Propeller Singing Phenomenon Through Vibration Analysis of Propeller Blade,” Proceeding of the Annual Spring Conference, SNAK, pp. 957-962.
  6. Lee, K. H. and Yeon, J. K., 1999, "A Study on Submarine Propeller Singing Noise," Proceedings of the KSNVE Annual Autumn Conference, pp. 748-756.
  7. Weaver, W. JR., 1990, "Vibration Problems in Engineering," John Wiley & Sons, Inc., New York.
  8. Hartlen, R. T. and Gurrie, I. G., 1970, "Lift-oscillator Model of Vortex-induced Vibration," J. Engineering Mechanics Division, Proc. ASME 96, pp. 577-591.

피인용 문헌

  1. Vortex Shedding Frequency for a 2D Hydrofoil with a Truncated Trailing Edge vol.51, pp.6, 2014, https://doi.org/10.3744/SNAK.2014.51.6.480