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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국항공우주학회 International Journal of Aeronautical and Space Sciences International Journal of Aeronautical and Space Sciences Volume.14 Number.3
- 발행연도
- 2013.9
- 수록면
- 201 - 209 (9page)
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초록· 키워드
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Much numerical and experimental research has been done for the flow around an oscillating airfoil. The main research topics are vortex shedding, dynamic stall phenomenon, MAV"s lift and thrust generation. Until now, researches mainly have been concentrated on analyzing the wake flow for the variation of frequency and amplitude at a low angle of attack. In this study, wake structures and acoustic wave propagation characteristics were studied for a plunging airfoil at high angle of attack. The governing equations are the Navier-Stokes equation with LES turbulence model. OHOC (Optimized High-Order Compact) scheme and 4th order Runge-Kutta method were used. The Mach number is 0.3, the Reynolds number is , and the angle of attack is from 20° to 50°. The plunging frequency and the amplitude are from 0.05 to 0.15, and from 0.1 to 0.2, respectively. Due to the high resolution numerical method, wake vortex shedding and pressure wave propagation process, as well as the propagation characteristics of acoustic waves can be simulated. The results of frequency analysis show that the flow has the mixed characteristics of the forced plunging frequency and the vortex shedding frequency at high angle of attack.
목차
Abstract
1. Introduction
2. The Governing Equations and the Numerical Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (22)
참고문헌 신청
1. [학술지(정기간행물)] - Platzer, M.F. / 2008 / Flapping Wing Aerodynamics: Progress and Challemges / AIAA Journal 46 (9) : 2136 ~ 2149
2. [학술지(정기간행물)] - Isogai, K. / 1999 / Effects of Dynamic Stall on Propulsive Efficiency and Thrust of Flapping Airfoil / AIAA Journal 37 (10) : 1145 ~ 1151
3. [학술지(정기간행물)] - Birnbaum, W. / 1924 / Das ebene Problem des Schlagenden Fluegels / Zeitschrift fuer Angewandte Mathematik und Mechanical 4 (4) : 277 ~ 292
4. [보고서] - Garrick, I.E. / 1936 / Propulsion of a Flapping and Oscillating Airfoils
5. [학술지(정기간행물)] - Jones, K.D. / 1998 / Experimental and Computational Investigation of the Knoller-Benz Effect / AIAA Journal 36 (7) : 1240 ~ 1246
2. [학술지(정기간행물)] - Isogai, K. / 1999 / Effects of Dynamic Stall on Propulsive Efficiency and Thrust of Flapping Airfoil / AIAA Journal 37 (10) : 1145 ~ 1151
3. [학술지(정기간행물)] - Birnbaum, W. / 1924 / Das ebene Problem des Schlagenden Fluegels / Zeitschrift fuer Angewandte Mathematik und Mechanical 4 (4) : 277 ~ 292
4. [보고서] - Garrick, I.E. / 1936 / Propulsion of a Flapping and Oscillating Airfoils
5. [학술지(정기간행물)] - Jones, K.D. / 1998 / Experimental and Computational Investigation of the Knoller-Benz Effect / AIAA Journal 36 (7) : 1240 ~ 1246
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UCI(KEPA) : I410-ECN-0101-2014-550-002838184