Mechanism of the Generation of Lift Forces on Each of Two Cylinders in a Tandem Arrangement at the Critical Reynolds Number Regime

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  • 臨界レイノルズ数領域における直列2円柱の揚力発生機構
  • リンカイ レイノルズスウ リョウイキ ニ オケル チョクレツ 2 エンチュウ ノ ヨウリョク ハッセイ キコウ

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Abstract

The mechanism of the generation of lift forces on each of two equal circular cylinders in a tandem arrangement has been examined at the critical Reynolds number regime for s/d=0.1 to 1.0, where d is the cylinder diameter and s the gap between two cylinders. When a laminar separation bubble is formed on one side only of the upstream cylinder, it experiences the lift force directed to the side where the bubble is formed. On the other hand, the downstream cylinder experiences the lift force in the opposite or in the same direction as the upstream cylinder depending on the values of Reynolds number.

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