Computing and Library Services - delivering an inspiring information environment

Sinking Bubbles in Stout Beers

Lee, William, Kaar, S. and O'Brien, S. B. G. (2017) Sinking Bubbles in Stout Beers. American Journal of Physics. ISSN 0002-9505 (In Press)

PDF - Accepted Version
Download (278kB) | Preview


A surprising phenomenon witnessed by many is the sinking bubbles seen in a settling pint of stout beer. Bubbles are less dense than the surrounding fluid so how does this happen? Previous work has shown that the explanation lies in a circulation of fluid promoted by the tilted sides of the glass. However, this work has relied heavily on computational fluid dynamics (CFD) simulations. Here we show that the phenomenon of sinking bubbles can be predicted using a simple analytic model. To make the model analytically tractable we work in the limit of small bubbles and consider a simplified geometry. The model confirms both the existence of sinking bubbles and the previously proposed mechanism.

Item Type: Article
Additional Information: The following article has been accepted by American Journal of Physics. After it is published, it will be found at
Subjects: T Technology > T Technology (General)
Schools: School of Computing and Engineering
Related URLs:
Depositing User: Sally Hughes
Date Deposited: 20 Dec 2017 09:18
Last Modified: 20 Dec 2017 09:22


Downloads per month over past year

Repository Staff Only: item control page

View Item View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©