A new breakup regime of liquid drops identified in a continuous and uniform air jet flow

作者:Cao Xian Kui; Sun Zhi Gang; Li Wei Feng; Liu Hai Feng*; Yu Zun Hong
来源:Physics of Fluids, 2007, 19(5): 057103.
DOI:10.1063/1.2723154

摘要

A new breakup regime of liquid drops, named the dual-bag breakup regime, in a continuous and uniform air jet flow is identified at We ranging from 28 to 41 at the present investigation. The dual-bag breakup regime is characterized by two successive bag breakup processes; the first one is suffered by the initial main drop, and the second one is suffered by the core drop produced in the first bag breakup process. Shadowgraph and high-speed cameras were used to record the temporal properties of liquid drops in the dual-bag breakup regime. Parameters including breakup time, drop deformation rate, and volume fraction of core drop, are measured and given as a function of Weber numbers in the dual-bag breakup regime.