Spreading of liquids on rough surfaces
Spreading of liquids on rough surfaces
复制标题
DOI：
10.1016/s0927-7757(98)00778-x
复制
发表时间：
1999-01-15
影响因子：
5.2
通讯作者：
Marmur, A
中科院分区：
文献类型：
--
作者：
Apel-Paz, M;Marmur, A
对液体在粗糙表面上的铺展进行了实验和理论研究。粘度跨越几个数量级的七种液体被用在具有五种不同平均粗糙度值（范围从约0.07至约40μm）的玻璃表面上。结果表明，实验数据可以通过幂律进行经验关联。此外，还提出了一个简单的理论模型，该模型考虑了液体进入粗糙槽的毛细管流动。由于供给毛细管流的液滴边缘位置的变化，通过考虑毛细管本身长度的变化来修改对该流的卢卡斯-沃什伯恩类型的分析。理论计算结果与实验数据吻合良好。 (C) 1999 Elsevier Science B.V. 保留所有权利。
Spreading of liquids on rough surfaces was studied experimentally and theoretically. Seven liquids, with viscosities spanning over a few orders of magnitude, were used on glass surfaces of five different values of average roughness, ranging from about 0.07 to about 40 mu m. It is shown that the experimental data can be empirically correlated by a power law. In addition, a simple theoretical model is presented, which takes into account the capillary flow of liquid into the roughness grooves. A Lucas-Washburn type of analysis for this flow is modified by taking into account the variation in the length of the capillary itself, due to the variation in the location of the edge of the drop that feeds the capillary flow. Results of the theoretical calculations are shown to be in good agreement with the experimental data. (C) 1999 Elsevier Science B.V. All rights reserved.