【摘要】 报道了二维泡沫形成和进化的实验装置 ,并研究了二维泡沫的拓扑学性质随时间的变化关系。在二维泡沫的进化中 ,存在着两种进化过程 ,一种是初始有序化的气泡进化 ,另一种是完全无序化的气泡进化。在无序化气泡的进化过程中 ,平均气泡面积随时间的变化呈现出幂指数关系 :α =1 5。这个时间指数大于VonNeumann定律的时间指数。此外 ,气泡的边数分布和边数分布的 2级动差亦被讨论更多还原

【Abstract】 An experimental study of the evolution of two-dimensional foam is presented. The topological properties of two-dimentional foam as a function of the evolution time is investigated. In the evolution of two-dimensional foam, two distinct states are observed: a transient characterized by the presence of ordered state and a long-term fully disordered state. The long-term behavior of the foam shows that the average bubble area increases as a power law with exponent α=15, which is deviation from Von Neumann law. In addition, the distribution of sides of bubbles and the second moment of the distribution of number of sides are discussed.更多还原