Wetting equilibrium in a rectangular channel.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 33416065.
- Also identified by DOI 10.1039/d0sm01727b.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
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.