2차원 날개의 유체-구조 연성해석
Fluid-Structure Interaction Analysis of Two-Dimensional Wings
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초록
When a natural frequency of the trailing edge of a wing 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,we first evaluate main features of oscillating characteristics of the wing. Second we simulate fluid-structure interaction of the wing with a flap using a commercial code, ANSYS-CFX, and investigate lift characteristics in a frequency domain.
Abstract
When a natural frequency of the trailing edge of a wing 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,we first evaluate main features of oscillating characteristics of the wing. Second we simulate fluid-structure interaction of the wing with a flap using a commercial code, ANSYS-CFX, and investigate lift characteristics in a frequency domain.
참고문헌 (5)
- Blake, W.K., "Mechanics of Flow-Induced Sound and Vibration. Volume I" (1986), Academic Press, INC
- Hwang, W.W., "Study on the propeller singing noise in commercial vessels", Proceedings of the Korean Society for Noise and Vibration Engineering Conference, pp.471~472 (2011)
- Kim, D.H., "A Study on he Propeller Blade Singing Place of An 86,000 ton Deadweight Crude Oil Tanker", 31(3), 31(3), pp.59~64 (1994)
- Lee, H.B., "Fluid-structure interaction analysis of two-dimensional flow around a moving cylinder", Proceedings of the Korean Society of Computational Fluid Engineering Conference, pp.68~74 (2011)
- 김형태, "진동하는 2차원 날개 단면 주위에 대한 점성 유동장 계산( Part 1. 동적실속이 없는 경우 )", 대한조선학회 논문집, 44(1), pp.8~15 (2007), 대한조선학회