Capillary rivulet rise in real-world corners

The capillary rise of liquid in a perfect corner wedge has been well studied in the past, yielding a t(1/3) rise behavior with no upper bound on the height of the rivulet. However, in real-world situations the wedge corner is often not exactly sharp, either because of roughness or fabrication imperfections. In the following study the behavior of capillary rivulet rise in rounded corners is examined experimentally and theoretically, yielding a deviation from the t(1/3) behavior and also a maximum rivulet height. The agreement between experiment and theory is very good.