Visualization of Flow in Intersecting Region of Diverging Streams in Multiple Diamond-shaped Islands

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  • A114 菱形角柱群流路における交差部背後の流れの可視化
  • ヒシガタ カクチュウグン リュウロ ニ オケル コウサブ ハイゴ ノ ナガレ

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Abstract

Experimental study was performed to investigate flow characteristics near a shear layer in intersecting region of diverging streams in multiple diamond-shaped islands. The wake flow in intersecting region were visualized using the fluorescein dye illuminated by a laser light sheet. The velocity variations in flow field were measured using two-dimensinal laser Doppler velocimetry. It is found that the difference of flow patterns depends on the arrangement of the diamond-shaped islands, the Reynolds number and the existence of the turbulence mesh. The characteristics of velocity variations in the intersecting region are also clarified.

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