涡流层,涡区
In this paper an experimental investigation was carried out, and it is proved: no matter whether tip vortex cavitation is visible, narrow band noise peak is connected with the flow near the tip of propeller.
本文用实验证实这种窄带噪声峰与桨叶梢部流动有关,无论梢涡空泡可见与否,都可能出现。
The spiral cloud and rain band of typhoon, whose origination and maintain can be explained with the vortex Rossby-wave theory and can produce "local vortex Rossby-wave" through changing gradient distribution pattern of local relative vorticity along outward direction of typhoon.
台风螺旋云雨带的形成与维持,可以用涡旋Rossby波理论来解释:可以通过改变局地相对涡度径向梯度分布,从而沿台风径向激发出局地涡旋Rossby波。
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