泡沫会持续多久?
How long will a bubble be ?
摘要:
肥皂泡是一个最终会破裂的亚稳态对象。事实上,由于排水和蒸发,二氧化硫水膜变薄直到破裂。在我们的实验研究中,已被认为是在液体浴表面的浮动气泡。它们的寿命已被测量和报告的半径。大气泡比小气泡持续时间长。此外,小气泡的寿命比大气泡更可预测。我们提出了一个通用的寿命方程,润滑理论的基础上。蒸发被证明是一个重要的过程,它决定了气泡的寿命。
英文摘要:
A soap bubble is a metastable object that eventually breaks. Indeed, the soapy water film thins until rupture, due to drainage and evaporation. In our experimental investigations, floating bubbles at the surface of a liquid bath have been considered. Their lifetime has been measured and reported with respect to their radius. Large bubbles last longer than small ones. Moreover, small bubbles have more predictable lifetimes than large ones. We propose a general equation for that lifetime, based on the lubrication theory. The evaporation is shown to be an essential process which determines the bubble lifetime.
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