强过饱和气液两相溶液中气泡的稳定扩散生长阶段
Stages of steady diffusion growth of a gas bubble in strongly supersaturated gas-liquid solution
摘要：
研究了气泡生长过程中溶解气体分子从周围过饱和溶液向气泡表面扩散通量的变化规律。揭示了流量稳定的条件。从下面的气泡半径的限制被认为是。它的实现保证了波动对气泡生长的影响很小，且这一过程是不可逆的。在扩散通量稳定的条件下，划分出气泡生长的三个阶段。在考虑气泡中的Laplace力的情况下，得到了气泡尺寸变化的时间间隔和气泡尺寸变化的时间间隔，并解析地描述了当完全忽略气泡中的Laplace力时，气泡生长的第三阶段趋向于自相似区的趋势。
英文摘要：
Gas bubble growth as a result of diffusion flux of dissolved gas molecules from the surrounding supersaturated solution to the bubble surface is studied. The condition of the flux steadiness is revealed. A limitation from below on the bubble radius is considered. Its fulfillment guarantees the smallness of fluctuation influence on bubble growth and irreversibility of this process. Under the conditions of steadiness of diffusion flux three stages of bubble growth are marked out. With account for Laplace forces in the bubble intervals of bubble size change and time intervals of these stages are found. The trend of the third stage towards the self-similar regime of the bubble growth, when Laplace forces in the bubble are completely neglected, is described analytically.
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