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arXiv 1201.5553nlin.CDphysics.flu-dyn
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开放混沌流中的反应粒子

Reacting particles in open chaotic flows

Alessandro P. S. de Moura

摘要:

本文研究了具有混沌平流的开放流中粒子的碰撞概率$p$。我们发现,$p$尺度与颗粒大小$δ$作为幂律,其系数是由定义的平流动力学不变集的分形维数。我们还认为,这种相同的缩放也适用于活性粒子的反应速率在低密度制度。这些分析结果进行了比较,数值模拟,我们发现非常好的协议与理论预测。

英文摘要:

We study the collision probability $p$ of particles advected by open flows displaying chaotic advection. We show that $p$ scales with the particle size $δ$ as a power law whose coefficient is determined by the fractal dimensions of the invariant sets defined by the advection dynamics. We also argue that this same scaling also holds for the reaction rate of active particles in the low-density regime. These analytical results are compared to numerical simulations, and we find very good agreement with the theoretical predictions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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