Browse > Article
http://dx.doi.org/10.6112/kscfe.2013.18.4.041

SELECTION OF THE OPTIMAL POSITION OF THE FLAP FOR THE IMPROVEMENT OF AERODYNAMIC PERFORMANCE  

Kang, H.M. (Aerodynamics Team, Korea Aerospace Research Institute)
Park, Y.M. (Civil Aircraft Systems Design Team, Korea Aerospace Research Institute)
Kim, C.W. (Aerodynamics Team, Korea Aerospace Research Institute)
Lee, C.H. (Aerodynamics Team, Korea Aerospace Research Institute)
Publication Information
Journal of computational fluids engineering / v.18, no.4, 2013 , pp. 41-46 More about this Journal
Abstract
The selection of the optimal position of the flap was performed in order to improve the aerodynamic performance during the take-off and landing processes of aircraft. For this, the existing airfoils of the main wing and flap are selected as the baseline model and the lift coefficients (cl) according to angle of attacks (AOA) were calculated with the change of the position of flap airfoil. The objective function was defined as the consideration of the maximum cl, lift to drag ratio and cl at certain AOA. Then, at 121 experimental points within $20mm{\times}20mm$ domain, two dimensional flow simulations with Spalart-Allmaras turbulence model were performed concerning the AOA from 0 to 15 degree. If the optimal position was located at the domain boundary, the domain moved to the optimal position. These processes were iterated until the position was included in the inside of the domain. From these processes, the flow separation at low AOA was removed and cl increased linearly comparing with that of the baseline model.
Keywords
Flap; CFD; Optimal Position;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 2003, Reckzeh, D., "Aerodynamic Design of the High-Lift-Wing for a Magaliner Aircraft," Aerospace Science and Technology, Vol.7, pp.107-119.   DOI   ScienceOn
2 2007, Wild, J., Brezillon, J., Amognon, O., Quest, J., Moens, F. and Quagliarella, D., "Advanced High-Lift Design by Numerical Methods and Wind Tunnel Verification within the European Project EUROLIFT II," 25th AIAA Applied Aerodynamics Conference, AIAA 2007-4300.
3 2005, Brezillon, J. and Wild, J., "Evaluation of Different Optimization Strategies for The Design of a High-Lift Flap Device," EUROGEN 2005, ISBN: 3-00-017534-2.
4 1974, Wentz Jr., W.H. and Seetbaram, H.C., "Development of a Fowler Flap system for a High Performance General Aviation Airfoil," NASA CR-2443.
5 2008, Kim, C. and Lee, Y., "Design of High Lift Flap with Optimization Technique," Korean Society for Computational Fluids Engineering Fall Conference, pp.227-228.
6 2010, Lee, Y., Kim, C. and Cho, T., "High Lift Device Design Optimization and Wind Tunnel Tests," Aerospace Engineering and Technology, Vol.9, No.1, pp.78-83.   과학기술학회마을
7 2011, Park, Y., Kim, C., Chung, J. and Lee, H., "Azerodynamic Design of High Lift Device for UAV Scale Aircraft," Korea Institute of Military Science and Technology Spring Conference.
8 2012, Park, Y., Chung, J. and Lee, H., "Aerodynamic Design Optimization of High Lift Device Flap Shape," The Society for Aerospace System Engineering Fall Conference.
9 1992, Spalart, P.R. and Allmaras, S.R., "A One Equation Turbulence Model for Aerodynamic Flows," AIAA 30th Aerospace Sciences Meeting and Exhibit, AIAA 92-0439.
10 2013, Park, Y., Kang, H., Chung, J. and Lee, H., "Optimization of Flap Shape and Position for Two-Dimensional High Lift Device Configuration," Korean Society for Computational Fluids Engineering Spring Conference, pp.281-285.