TY - JOUR
T1 - Two-Dimensional Lattice Boltzmann Model for Droplet Impingement and Breakup in Low Density Ratio Liquids
AU - Amit Gupta & Ranganathan Kumar
JO - Communications in Computational Physics
VL - 3
SP - 767
EP - 784
PY - 2011
DA - 2011/10
SN - 10
DO - http://doi.org/10.4208/cicp.221209.160910a
UR - https://global-sci.org/intro/article_detail/cicp/7460.html
KW - 
AB - <p style="text-align: justify;">A two-dimensional lattice Boltzmann model has been employed to simulate
the impingement of a liquid drop on a dry surface. For a range of Weber number,
Reynolds number and low density ratios, multiple phases leading to breakup have
been obtained. An analytical solution for breakup as function of Reynolds and Weber
number based on the conservation of energy is shown to match well with the simulations.
At the moment breakup occurs, the spread diameter is maximum; it increases
with Weber number and reaches an asymptotic value at a density ratio of 10. Droplet
breakup is found to be more viable for the case when the wall is non-wetting or neutral
as compared to a wetting surface. Upon breakup, the distance between the daughter
droplets is much higher for the case with a non-wetting wall, which illustrates the role
of the surface interactions in the outcome of the impact.</p>