title: Quantitative, three-dimensional diagnostics of multiphase drop fragmentation via digital in-line holography.
abstract: Quantitative application of digital in-line holography (DIH) to characterize multiphase fragmentation is demonstrated. DIH is applied to record sequential holograms of the breakup of an ethanol droplet in an aerodynamic flow field. Various stages of the breakup process are recorded, including deformation, bag growth, bag breakup, and rim breakup. A recently proposed hybrid method is applied to extract the three-dimensional (3D) location and size of secondary droplets as well as the 3D morphology of the rim. Particle matching between sequential frames is used to determine the velocity. Coincidence with the results obtained from phase Doppler anemometry measurement demonstrates the accuracy of measurement by DIH and the hybrid method.
authors.affiliation: School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA.
authors.forename: Jian
authors.initials: J
authors.lastname: Gao
authors.forename: Daniel R
authors.initials: DR
authors.lastname: Guildenbecher
authors.forename: Phillip L
authors.initials: PL
authors.lastname: Reu
authors.forename: Varun
authors.initials: V
authors.lastname: Kulkarni
authors.forename: Paul E
authors.initials: PE
authors.lastname: Sojka
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
mesh_terms: D006696:Holography / Q000379:methods*; D057446:Hydrodynamics