121 加速するホイールの空力特性と可視化解析(移動体の空力特性)

DOI Web Site

書誌事項

タイトル別名
  • 121 Aerodynamic specification and flow visualization on disk wheel which produces forward lift

抄録

In recent years, bicycles are attracted as lower environmental burden transfer. Then, amateur competitors keep increasing, and they began to indicate data of aerodynamic specification of bicycle components as frames, spokes, helmets and wheels. This study verified the effects of Sub9 produced by Zipp. Zipp argues this wheel "produce forward lift" in a wind angle of 12 to 18 degrees. Therefore, we made 3 kinds of wheels, plain disk, normal disk wheel and Sub9 model. Those were used as a drag force measurement and flow visualization, and investigated in non-rotate conditions and rotate conditions. Drag force of each model was measured with three components load cell. Flow visualization in a smoke wind tunnel was also carried out in a vertical plane. As a result, Sub9 produced little thrust over wind angle of 16 degrees. Plain disk have similar specification to Sub9, and normal disk wheel is the worst wheel in this study. The results of the flow visualization also explain these phenomena well.

収録刊行物

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ