Japan Aerospace Exploration Agency Aviation Program Group
Japan Aerospace Exploration Agency Aviation Program Group
Institute of Fluid Science, Tohoku University
Japan Aerospace Exploration Agency Aviation Program Group
JAXA Special Publication: Proceedings of 39th Fluid Dynamics Conference/Aerospace Numerical Simulation Symposium 2007
巻
JAXA-SP-07-016
ページ
68 - 74
発行年
2008-02-29
抄録（英）
In this paper, a multi-objective design exploration for a three-element airfoil which consists of a slat, main wing, and flap was carried out by paying attention to the span wise flow effect. Reynolds Averaged Navier-Stokes Solver (RANS) was used for the evaluation during the design process. To reduce computational time, '2.5-dimensional span wise calculation' was used. In this calculation, two same planes were arranged along span wise direction. They were diagonally arranged to represent the sweep angle and periodic boundary condition was used for the infinite span wise calculation. Kriging based Multi-Objective Genetic Algorithm (MOGA) and ANalysis Of VAriance (ANOVA) were used for the design exploration. The objective functions were defined as the maximization of lift coefficient at landing and near stall conditions simultaneously. In this study, 54 sample points were evaluated for the construction of the Kriging model. Based on present evaluation method, the span wise flow was observed and it has an influence on the separation on the flap. Through the design exploration process, the differences of the designed results between 2.5D and 2D evaluation were observed by visualizing the design space.
横流れを考慮した高揚力翼型展開形態の設計探査
63742012.pdf
(977.17KB)
