Open AccessA coupled level-set and volume-of-fluid simulation for splashing of single droplet impact on an inclined liquid film
Author(s) -
戴剑锋,
樊学萍,
蒙波,
刘骥飞
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.094704
Subject(s) - entrainment (biomusicology) , bubble , volume of fluid method , mechanics , materials science , front (military) , air entrainment , impact pressure , flow (mathematics) , physics , meteorology , acoustics , rhythm
A coupled level set and volume of fluid (CLSVOF) method is utilized to simulate the droplet evolution, during splashing after impacting on an inclined liquid film, and the bubble entrainment by the droplet impacting of the liquid. The influence of impact angles of bubble entrainment, the processes of splashing pressure field and velocity field after impingement are studied and discussed. Compared with the results obtained by experiment, the validity of CLSVOF method is verifiled by simulating the droplet splashing on an inclined liquid film. Results indicate that the mechanisms of front and back splashing are different. The front splashing is caused by pressure difference in the neck region, and the back splashing is produced by radial flow in the liquid film. It is also found that along with the impact angle moving towards the large angle direction, the bubble entrainment number shows a reducing trend.