论文标题
在蒸发驱动的马龙尼（Marangoni）中，对称破裂和混乱流过气泡
Symmetry breaking and chaos in evaporation driven Marangoni flows over bubbles
论文作者
论文摘要
了解构成气泡的液体膜的动力学是实际和基本的重要性。实际上，这种理解对于调整气泡稳定性至关重要，而从根本上讲，薄膜是研究2D流的绝佳平台。在这里，我们研究了受蒸发驱动的Marangoni流动的气泡的时空膜厚度动力学。最初，我们证明了如何在蒸发驱动的流动的帮助下如何对气泡稳定性进行显着调节。随后，我们揭示了厚度曲线的空间对称性随着挥发性物种浓度而非单调的，谱图在两个极端的浓度下为轴对称。 $ 50 \％$浓度，空间对称性分解，厚度波动在太空中到处都是混乱的，波动的统计数据在空间上不变和雄性。在这些情况下，厚度波动的功率谱遵循Kolmogorov $ -5/3 $缩放 - 首先是通过蒸发强迫的示范。这些结果以及所报道的设置提供了一个出色的框架，以进一步研究2D混沌流。
Understanding the dynamics of liquid films that make up bubbles is of practical and fundamental importance. Practically, this understanding is crucial for tuning bubble stability, while fundamentally, thin films are an excellent platform to study 2D flows. Here we study the spatiotemporal film thickness dynamics of bubbles subjected to evaporation driven Marangoni flows. Initially, we demonstrate how bubble stability can be dramatically tuned with the help of evaporation driven flows. Subsequently, we reveal that the spatial symmetry of thickness profiles evolves non-monotonically with the volatile species concentration, with profiles being axisymmetric at the two extremes in concentration. At $50\%$ concentration, spatial symmetry breaks down and thickness fluctuations are chaotic everywhere in space, with the fluctuation statistics becoming spatially invariant and ergodic. For these cases, the power spectrum of thickness fluctuations follow the Kolmogorov $-5/3$ scaling - a first such demonstration for forcing by evaporation. These results along with the reported setup provide an excellent framework to further investigate 2D chaotic flows.
