Angle of attack and nose shape of bodies are key factors that asymmetric vortex occurs over slender bodies.

迎角、旋成体的外形，尤其是头部的几何形状是细长前体出现非对称涡的关键因素。

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The results show that the performance of optimized fan is improved by lowering the energy loss which caused by the secondary flow vortex, the volute tongue, the wake-jet and the angle of attack.

研究结果表明：通过优化有效降低了因二次流漩涡、风机蜗舌结构、尾流-射流和正冲角等造成的能量损失，提高了离心通风机性能。

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The experimental investigation of the effect of winglet on the spatial vortex of slender body at high Angle of attack is presented.

本文介绍了小翼对旋转体空间涡影响机理的实验研究结果。

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