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標題: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
作品名稱(其他語言)
著者Sun, W.-H., Miao, J-.M., Tai, C.-H., and Hung, C.-C.
作品所屬單位
出版者
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
語言中文
收錄於
會議性質國際
校內研討會地點
研討會時間20110222~20110224
通訊作者
國別馬來西亞
公開徵稿
出版型式
出處MY74000
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