Effect of surface texture and liquid property on the liquid film flow on an inclined wall
Effect of surface texture and liquid property on the liquid film flow on an inclined wall
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表面纹理和液体性质对斜壁上液膜流动的影响
DOI：
10.1063/1.4825462
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
S. Matsuno
中科院分区：
文献类型：
--
作者：
M. Kato;Y. Iso;Jian Huang;S. Matsuno
液膜流用于吸收等分离过程时，要求增加气液界面面积，以提高分离性能.此外，吸收过程中的低液体负荷对于经济性能是有效的。然而，低液体负载的液膜破裂成细流流动，并且减少了其在气液之间的界面面积。本研究的重点是通过改变不仅液体流量，但也液体的性质，以及如何影响这种现象的壁面纹理处理的薄膜流和气泡流之间的过渡现象的详细描述。通过实验室规模的实验验证了计算流体动力学（CFD）与流体体积（VOF）模型的结果。计算结果表明，波纹表面能有效地防止液膜破裂。导出了与无量纲参数韦伯数、雷诺数和雷诺数有关的润湿面积比关联式。
Liquid film flow used for separation processes such as absorption is required to increase thegas-liquid interfacial area in order to improve the separation performance. Furthermore, the low liquid loading in absorption processes is effective for the economic performance. Liquid film with low liquid loading, however, breaks up to rivulet flow, as well as reduces its interfacial area between gas and liquid. The present study focuses on detailed descriptions of the transition phenomena betweenfilm flow andrivulet flow by varying not only liquid flow rate but also liquid properties, as well as how such phenomena are affected by wall surface texture treatments. Results obtained by Computational Fluid Dynamics (CFD) with the Volume of Fluid (VOF) model are validated by lab-scale experiments. The results of CFD show that a wavy surface is effective to prevent the liquid film break-up. Correlation equations for the wetted area ratio are derived as functions of the dimensionless parameters Weber number, Reynolds n...