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arXiv 1111.3637math.AP
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具有负涡度的小振幅孤波中的粒子路径

Particle paths in small amplitude solitary waves with negative vorticity

Ling-Jun Wang

摘要:

我们研究了具有涡量的孤波中的粒子轨迹,其中涡量被假定为负的并且随深度减小。我们表明,单个粒子的运动方式类似于在无旋的情况下,如果底层层流是有利的,也就是说,流动是在相同的方向上传播的波在整个流体,并表明,如果底层电流是不利的,足够小的孤波中的一些粒子沿着具有单个环路或隆起的路径向波传播的相反方向移动。

英文摘要:

We investigate the particle trajectories in solitary waves with vorticity, where the vorticity is assumed to be negative and decrease with depth. We show that the individual particle moves in a similar way as that in the irrotational case if the underlying laminar flow is favorable, that is, the flow is moving in the same direction as the wave propagation throughout the fluid, and show that if the underlying current is not favorable, some particles in a sufficiently small solitary wave move to the opposite direction of wave propagation along a path with a single loop or hump .

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