1987-11-13

The Formation Mechanism of the Asymmetric Spatial Vortex of Slender Bodies at High Angle of Attack 872435

The method of the flourescent mini-tuft has been used to investigate the FORMATION MECHANISM of the asymmetric spatial vortex of slender bodies at high angle of attack in low speed tunnel without sideslip. This investigation clearly shows that the FORMATION MECHANISM of the asymmetric spatial vortex is; when the width of leeside (governed by the potential flow) is not enough for the free development of both side vortex, the weak vortex is pushed upward by the strong vortex. This investigation also shows the occasional and inevitable features of asymmetric vortex. The effect of turbulence and adverse pressure are also be considered.

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