实验流体力学2016，Vol.30Issue(5)：9-16,8.DOI:10.11729/syltlx20160029
冲击作用下液滴在环境液体中的变形破碎行为
Deformation and breakup behaviors of a drop in ambient liquid under impact
摘要
Abstract
In this study,we carry out an experimental investigation of the behaviors as well as the mechanism of the liquid-liquid drop deformation and breakup process following an impact. With high speed photography,five distinct deformation and breakup modes are captured,for which the key factors that dominate the transition are quantitatively analyzed.The results show that similar deformation behaviors may occur for a proper combination of drop sizes,density rati-os between drop and ambient fluid,interfacial tensions and free falling heights.Two non-dimen-sional parameters,i.e.Weber number (We)and Ohnesorge number (Oh),are calculated to esti-mate these effects.It is found that,similar deformation behaviors may have a strong correlation with the Weber number.After a further survey of the test range of present study (1<We<700, 0.001<Oh<0.005),it can be concluded that the deformation and breakup pattern is barely af-fected by the Ohnesorge number,whereas exhibits a strong dependence on the Weber number.关键词
液-液体系/液滴变形破碎/冲击/高速摄影/We 数/Oh数Key words
liquid-liquid system/drop deformation and breakup/impact/high speed photogra-phy/Weber number/Ohnesorge number分类
数理科学引用本文复制引用
廖斌,张桂夫,王鲁海,朱雨建,杨基明..冲击作用下液滴在环境液体中的变形破碎行为[J].实验流体力学,2016,30(5):9-16,8.基金项目
国家自然科学基金项目(11572313) （11572313）
安徽省高等教育提升计划省级自然科学研究一般项目(TSKJ2015B03) （TSKJ2015B03）
