Optimization Approach on Flapping Aerodynamic Characteristics of Corrugated Airfoil
學年 99
學期 2
發表日期 2011-02-22
作品名稱 Optimization Approach on Flapping Aerodynamic Characteristics of Corrugated Airfoil
著者 Sun, W.-H; Miao, J-.M; Tai, C.-H; Hung, C.-C.
會議名稱 ICBB 2011: International Conference on Bioengineering and Bionanotechnology (EI)
會議地點 Penang, Malaysia
摘要 The development of biomimetic micro-aerial-vehicles (MAVs) with flapping wings is the future trend in military/domestic field. The successful flight of MAVs is strongly related to the understanding of unsteady aerodynamic performance of low Reynolds number airfoils under dynamic flapping motion. This study explored the effects of flapping frequency, stroke amplitude, and the inclined angle of stroke plane on lift force and thrust force of a bio-inspiration corrugated airfoil with 33 full factorial design of experiment and ANOVA analysis. Unsteady vorticity flows over a corrugated thin airfoil executing flapping motion are computed with time-dependent two-dimensional laminar incompressible Reynolds-averaged Navier-Stokes equations with the conformal hybrid mesh. The tested freestream Reynolds number based on the chord length of airfoil as characteristic length is fixed of 103. The dynamic mesh technique is applied to model the flapping motion of a corrugated airfoil. Instant vorticity contours over a complete flapping cycle clearly reveals the flow mechanisms for lift force generation are dynamic stall, rotational circulation, and wake capture. The thrust force is produced as the leading edge vortex shedding from the trailing edge of airfoil to form a reverse von Karman vortex. Results also indicated that the inclined angle is the most significant factor on both the lift force and thrust force. There are strong interactions between tested factors which mean an optimization study on parameters should be conducted in further runs.
關鍵字 MAVs;aerodynamic,;ANOVA analysis; vorticity
語言 zh_TW
會議性質 國際
研討會時間 20110222~20110224
國別 MYS
出處 MY74000

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/114906 )