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首页> 外文期刊>International Journal of Multiphase Flow >Drainage waves structure in gas-liquid foam
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Drainage waves structure in gas-liquid foam

机译:气液泡沫中的排水波结构

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摘要

The simple physical model of foam drainage suggested previously by the authors is developed. A non-linear partial differential equation is obtained to describe foam syneresis (drainage process). Special kinds of its solutions in the form of a travelling wave are analysed. It is proved that for such types of solutions the right boundary condition cannot equal zero. A possible explanation for this restriction is suggested. In the authors' opinion, the main reason for this unexpected result is the peculiarity of the Plateau-Gibbs borders form: a cross-section of the Plateau triangle cannot be equal to zero under any variation of foam parameters. In mathematical terms this is reflected in the appearance of a square root singularity in the evolutionary equation that leads to the conclusion made. Qualitative comparison with recent experimental data is presented. It proves the principal conclusion obtained by the authors.
机译:建立了作者先前建议的简单的泡沫排水物理模型。获得一个非线性偏微分方程来描述泡沫脱水(排水过程)。分析了行波形式的特殊解决方案。事实证明,对于这种类型的解,右边界条件不能等于零。建议对此限制进行可能的解释。作者认为,产生这种意外结果的主要原因是Plateau-Gibbs边界形式的特殊性:在任何泡沫参数变化下,Plateau三角形的横截面都不能等于零。用数学术语来说,这反映在演化方程中平方根奇异性的出现上,从而得出结论。提出与最新实验数据的定性比较。它证明了作者得出的主要结论。

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