G703 薄い境界層に設置された円錐体周りの流れ : 円錐体表面圧力分布の頂角に対する変化(GS-7 物体周りの流れ・連成振動,一般セッション)

概要

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The pressure measurement has been made on surface of a cone placed in a thin turbulent boundary layer. The apex angle 2α of cone is less than 90° and the height is 50mm. The Reynolds number based on the height is 2.31×10^4 and the relative boundary layer thickness is 0.42. The pressure distribution at θ=0° (θ=0° is the upstream position at symmetric plane.) is strongly depends on 2α. The maximum value at θ=0° can be represented with squared-cosine function of α. When 2α increases, it is expected that a branch flow at θ=0° occurs toward the bottom and top of the cone.
社団法人日本機械学会の論文
2009-11-06