Waves in Guinness
Waves in Guinness
复制标题
吉尼斯世界纪录中的波浪
DOI:
10.1063/1.2929369
复制
发表时间:
2008
影响因子:
4.6
通讯作者:
S. O'Brien
中科院分区:
文献类型:
--
作者:
M. Robinson;A. Fowler;A. Alexander;S. O'Brien
We describe a simple model of a bubbly two-phase flow which is able to explain why waves propagate downward when a pint of Guinness is poured, and also how the waves are generated. Our theory involves a physically based regularization of the basic equations of the two-phase flow, using interphasic pressure difference and virtual mass terms, together with bulk or eddy viscosity terms. We show that waves can occur through an instability analogous to that which forms roll waves in inclined fluid flows, and we provide a description of the form of these waves, and compare them to observations. Our theory provides a platform for the description of waves in more general bubbly two-phase flows, and the way in which the flow breaks down to form slug flow.
DOI:
--
发表时间:
1969-08
期刊:
--
影响因子:
--
作者:
G. Wallis
通讯作者:
G. Wallis