Bubble cascade in Guinness beer is caused by gravity current instability
Bubble cascade in Guinness beer is caused by gravity current instability
复制标题
吉尼斯啤酒中的气泡级联是由重力流不稳定引起的
DOI:
10.1038/s41598-019-42094-0
复制
发表时间:
2019
影响因子:
4.6
通讯作者:
Shiono Takashi
中科院分区:
文献类型:
--
作者:
Watamura Tomoaki;Iwatsubo Fumiya;Sugiyama Kazuyasu;Yamamoto Kenichiro;Yotsumoto Yuko;Shiono Takashi
The downward movement of the bubble-texture in a glass of Guinness beer is a fascinating fluid flow driven by the buoyant force of a large number of small-diameter bubbles. This texture motion is a frequently observed phenomenon on pub tables. The physical mechanism of the texture-formation has been discussed previously, but inconsistencies exist between these studies. We performed experiments on the bubble distribution in Guinness poured in an inclined container, and observed how the texture forms. We also report the texture-formation in controllable experiments using particle suspensions with precisely specified diameters and volume-concentrations. Our specific measurement methods based on laser-induced-fluorescence provide details of the spatio-temporal profile of the liquid phase velocity. The hydrodynamic condition for the texture-formation is analogous to the critical point of the roll-wave instability in a fluid film, which can be commonly observed in water films sliding downhill on a rainy day. Here, we identify the critical condition for the texture-formation and conclude that the roll-wave instability of the gravity current is responsible for the texture-formation in a glass of Guinness beer.
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影响因子:
64.8
作者:
Hilderic Friend
通讯作者:
Hilderic Friend
DOI:
10.1098/rspa.1984.0079
发表时间:
1984-08
期刊:
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
影响因子:
--
作者:
D. Needham;J. Merkin
通讯作者:
D. Needham;J. Merkin
影响因子:
4.6
作者:
Bergougnoux, L;Ghicini, S;Hinch, J
通讯作者:
Hinch, J
影响因子:
4.6
作者:
M. Robinson;A. Fowler;A. Alexander;S. O'Brien
通讯作者:
S. O'Brien
影响因子:
4.6
作者:
E. Herbolzheimer
通讯作者:
E. Herbolzheimer