0126 ピッチング運動とヒービング運動が組み合った運動を行う弾性翼の非定常流体力特性(OS1-5 噴流,後流および剥離流れの流動解析と応用,オーガナイズドセッション)

概要

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Many studies on unsteady flow at low Reynolds number regions have been carried out with experimental and numerical approaches. The flow field around an elastic body has attracted significant attentions in recent years. A flow around an elastic body is treated as a coupled problem of a fluid and a structure and it has been studied mainly by numerical analyses so far. The purpose of the present study is to clarify the characteristics of dynamic thrust acting on an unsteady elastic airfoil, NACA0010, with pitching and heaving motions. The dynamic thrusts acting on the rigid and elastic airfoils are strongly dependent on the Strouhal number based on the trailing edge amplitude regardless of elastic deformations. However, the thrust efficiency of the elastic airfoil is higher than that of the rigid airfoil.
2009-11-06