空间约束导致正丝张力涡环寿命的增强和扩展
Spatial Confinement Causes Lifetime Enhancement and Expansion of Vortex Rings with Positive Filament Tension
摘要：
我们研究了空间约束对三维激励涡动力学的影响。在化学活性介质中，我们观察到这种涡卷环的收缩减少，甚至膨胀，尽管它们的正细丝张力。我们提出了一个运动学模型，它考虑到了相互作用的涡旋环与一个封闭的诺依曼边界。该模型再现了所有实验观察到的制度环的演变，并正确地预测了数值模拟的基础反应扩散方程所获得的结果。
英文摘要：
We study the impact of spatial confinement on the dynamics of three-dimensional excitation vortices with circular filaments. In a chemically active medium we observe a decreased contraction of such scroll rings and even expanding ones, despite of their positive filament tension. We propose a kinematical model which takes into account the interaction of the scroll ring with a confining Neumann boundary. The model reproduces all experimentally observed regimes of ring evolution, and correctly predicts the results obtained by numerical simulations of the underlying reaction-diffusion equations.
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