在低于两种组分的本体沸腾温度下经历强烈界面沸腾的双液体系统中的比界面面积和自搅拌
Specific interface area and self-stirring in a two-liquid system experiencing intense interfacial boiling below the bulk boiling temperatures of both components
摘要:
我们提出了一种方法来理论评估的平均比界面面积$(δ{S}/δ{V})$的两个不混溶的液体经历界面沸腾搅拌系统。该评价是基于湍流边界层中机械能转化的平衡和动量、热量传递的规律。该理论产生特定的界面面积和系统状态的特征之间的关系。特别是,这使我们能够在没有外部热量供应的情况下推导出系统的自冷却动力学方程。研究结果为建立界面沸腾过程的完备数学描述提供了可能。在这项研究中,我们假设两种组分的体积分数是相似的,以及它们的运动粘度和分子热扩散率的值。
英文摘要:
We present an approach to theoretical assessment of the mean specific interface area $(δ{S}/δ{V})$ for a well-stirred system of two immiscible liquids experiencing interfacial boiling. The assessment is based on the balance of transformations of mechanical energy and the laws of the momentum and heat transfer in the turbulent boundary layer. The theory yields relations between the specific interface area and the characteristics of the system state. In particular, this allows us to derive the equations of self-cooling dynamics of the system in the absence of external heat supply. The results provide possibility for constructing a self-contained mathematical description of the process of interfacial boiling. In this study, we assume the volume fractions of two components to be similar as well as the values of their kinematic viscosity and molecular heat diffusivity.
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