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流动分离是引起水翼升阻比下降、诱发振动和噪声的重要原因.本文将涡流发生器应用于水翼,实验研究了涡流发生器对水翼上流动分离的抑制作用.通过在NACA0015翼型前缘设置一列微型涡流发生器,测试了不同来流速度下,水翼吸力面的压力分布.实验结果发现,涡流发生器应用于水翼时,可增大近壁面流体动量,从而延迟甚至抑制流动分离的产生.类似于空气中作用,涡流发生器的高度对其控制流动分离的效果影响很大,当高度相对边界层厚度较小时,涡流发生器能较好地抑制流动分离.然而随着高度增加,对效果的影响却是非线性的,其原因还有待于进一步深入研究.“,”Flow separation is an important cause of lift-drag ratio decrease and severe vibration and noise for hydrofoil.Vortex generators (VGs) are applied on hydrofoil in this research and the control effect of VGs on flow separation is systematically studied experimentally.The pressure distribution on the suction side of the hydrofoil was recorded at different flow velocities by setting a row of low-profile VGs in the leading edge of the NACA0015 hydrofoil.It was found that flow separation is delayed or even suppressed-since the momentum of fluid near solid wall is increased with VGs.Moreover,the height of VGs has a great influence on the effect of the flow separation,which is similar with the effect of VGs in air.The performance of VGs becomes better when the height is relatively smaller compared to the boundary layer thickness.However,the influence of height on performance shows nonlinear with the increase of height,which needs further research.