On the Blade Characteristics and Stalling Performance of an Axial-Flow Pump Related with the Flow Velocities on the Blade Elements

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  • 軸流ポンプ羽根車の翼表面流速と羽根車特性および失速との関係について
  • ジクリュウ ポンプ ハネグルマ ノ ヨク ヒョウメン リュウソク ト ハネグルマ トクセイ オヨビ シッソク ト ノ カンケイ ニ ツイテ

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Abstract

The flow patterns in an axial-flow pump are observed by the lines of the mixture of pigment and water (Streichlinie) in the impeller flashed by strobo-light. The pressure and velocity distributions on the airfoil sections are culculated from the experimental results. And the impeller-heads computed from these distributions are compared with the input-heads. As the flow rate decreases the stalled states are observed first on the outer radial sections and then, when the performance droops, on successive inner sections. With further decrease of the flow rate the characteristics rise sharply accompanying the radial flow.

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