Popping a champagne cork reveals propulsive dynamics

(a) Computational domain of coupled system bottleneck–stopper–gas (initial conditions); (b) detail of density plot at t=0.5 ms. Credit: Flow (2024). DOI: 10.1017/flo.2023.34

Researchers have resolved the complex gas dynamics that occur upon opening a champagne bottle (or, more generally, a bottle containing a pressurized liquid and gas) and these dynamics’ interaction with the bottle’s cork stopper. The researchers’ findings have been published in the journal Flow.

The team found that the difference between the pressure force at the cork’s base and the (sliding) friction force decisively controls the cork’s motion, as the pressure forces acting on its remaining surfaces …
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