Article dans une revue avec comité de lecture


Evidence for ascending bubble driven flow patterns in champagne glasses, and their impact on gaseous CO2 and ethanol release under standard tasting conditions
Bubble Science, Engineering and Technology, Vol. 4, N° 1, pp 35-48 (2012).

par   G. Liger-Belair , C. Cilindre , Fabien BEAUMONT , P. Jeandet , Guillaume POLIDORI

Résumé :

A simple glass of champagne or sparkling wine may seem like the acme of frivolity to most of
people, but in fact it may rather be considered as a fantastic playground for any fluid physicist or
physicochemist. In this tutorial review, some recent investigations on ascending bubble driven
flow patterns found in various champagne glasses, and their impact on gaseous carbon dioxide
and ethanol release under standard tasting conditions, are reported. Ascending bubble driven
flow patterns found in the bulk of various glasses were evidenced, through laser tomography
techniques, which illustrate the fine interplay between ascending bubbles and the fluid around.
Moreover, spontaneous and self-organised two-dimensional convective cells were also
evidenced at the air/champagne interface. In addition, the simultaneous monitoring of gaseous
CO2 and ethanol in the headspace of both a flute and coupe filled with champagne was reported,
depending on whether or not the glass shows effervescence. Both gaseous CO2 and ethanol
were found to be enhanced by the presence of ascending bubbles, thus confirming the close link
between ascending bubbles, ascending bubble driven flow patterns, and the release of gaseous
CO2 and volatile organic compounds.


Thématique du GRESPI concernée par cet article :

          -Thermomécanique

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