论文标题
矩形通道中的润湿平衡
Wetting equilibrium in a rectangular channel
论文作者
论文摘要
当一个带有角落的毛细管通道被液体润湿时，在某些区域中，流体填充了整个横截面和区域，其中只有弯道被流体填充。部分填充区域的$ S^*$的流体分数是与毛细管压力相关的重要数量。我们计算出与矩形略微偏差的横截面的通道的$ s^*$的值：中心的高度大于两个短侧的高度。我们发现，横截面几何形状的一个小变化导致$ S^*$的巨大变化。该结果与实验观察一致。
When a capillary channel with corners is wetted by a fluid, there are regions where the fluid fills the whole cross-section and regions where only the corners are filled by the fluid. The fluid fraction of the partially-filled region, $s^*$, is an important quantity related to the capillary pressure. We calculate the value of $s^*$ for channels with a cross-section slightly deviated from a rectangle: the height is larger in the center than those on the two short sides. We find that a small change in the cross-section geometry leads to a huge change of $s^*$. This result is consistent with experimental observations.
