Lift and Drag Forces around Clark Y Hydrofoil under Cavitating Flow at Multiple Angles of Attack with Different Boundary Layer Characteristics

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Other Title
  • 境界層特性の異なる複数の迎角におけるClark Y翼形のキャビテーション発生下の揚抗力
  • キョウカイソウ トクセイ ノ コトナル フクスウ ノ ゲイカク ニ オケル Clark Yヨクケイ ノ キャビテーション ハッセイ カ ノ ヨウコウリョク

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Description

<p>Cavitating flow around a Clark Y-11.7% hydrofoil in a water tunnel is experimentally studied in order to understand the relationship between cavity patterns and lift and drag characteristics under some boundary layer conditions. The experiments are carried out under various conditions about angles of attack and the amount of dissolved air. Oil film method is conducted in order to investigate the detail of boundary layer on the hydrofoil at the various angles of attack. At the angles of attack of 2° and 20°, dissolved air content has some impact on both cavitation behavior and cavitation performance of hydrofoil, but it affects only cavitation behavior at the angle of attack of 8°. Also, lift and drag force oscillations are measured and they correspond to that of the cavity growth and disappearance at the angle of attack of 20°.</p>

Journal

  • Turbomachinery

    Turbomachinery 46 (12), 715-722, 2018

    Turbomachinery Society of Japan

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