Rising bubble in a cell with a high aspect ratio cross-section filled with a viscous fluid and its connection to viscous fingering

We investigate, both experimentally and theoretically, the velocity and shape of bubbles that rise in a vertical cell with a rectangular cross-section due to buoyancy. The shorter length of the cross-section is comparable to, and the longer length is larger than, the capillary length. This geometry...

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Bibliographic Details
Main Authors: Mayuko Murano, Ko Okumura
Format: Article
Language:English
Published: American Physical Society 2020-02-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.2.013188