Experimental Investigation of Blockage Effect of Upper Wall of Wind-Tunnel on Wake of Two-Dimensional Flat Plate Normal to Plane Boundary

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  • 平面上の直立平板の後流に及ぼす風胴上壁の閉そく影響に関する実験的研究
  • ヘイメンジョウ ノ チョクリツ ヘイバン ノ コウリュウ ニ オヨボス フウド

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This paper describes an experimental investigation on the blockage effect of an upper wall of wind-tunnel on the wake of a two-dimensional flat plate normal to a plane boundary in a uniform stream. The experiment was carried out in the 40cm×40cm N.P.L. type wind-tunnel having the working section of 2m long. The distributions of the velocity and static pressure of the flow field, the vortex generating region behind the flat plate, the surface pressure and the drag coefficient of the flat plate, and the shear flow near the wall in the wake region were measured and the results were discussed in comparison with those of the existing investigations and the theory.

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