Simulating the opening of a champagne bottle ...

• Main Authors: Wagner, Lukas, Braun, Stefan, Scheichl, Bernhard
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: arXiv 2023
• Subjects: Fluid Dynamics physics.flu-dyn; FOS Physical sciences; 76Jxx; Champagne; Carbonic acid
• Online Access: https://dx.doi.org/10.48550/arxiv.2312.12271; https://arxiv.org/abs/2312.12271

The axially symmetric, swirl-free gas dynamics and interlinked motion of a cork stopper provoked by the opening of a champagne bottle are modelled rigorously and studied numerically. The experimental study by Liger-Belair, Cordier \& Georges (Science Advances, 5(9), 2019) animated the present investigation. Inspection analysis justifies the inviscid treatment of the expanding jet of air enriched with dissolved carbonic acid gas initially pressurised in the bottle. Solving the resulting Euler equations is facilitated through the open-source software "Clawpack". Specific enhancements allow for resolving the emerging supersonic pockets, associated with surprisingly complex shock structures, as well as the gas-stopper interaction with due accuracy. Our experimental effort provided modelling the frictional behaviour, constitutive law and reversible (de-)compression of cork. Initially, the gas expands inside the bottleneck yet sealed by the stopper, hence accelerated by the gas but decelerated by dry sliding ... : Accepted by "Flow", in press ...