title: X-ray imaging of shock waves generated by high-pressure fuel sprays.
abstract: Synchrotron x-radiography and a fast x-ray detector were used to record the time evolution of the transient fuel sprays from a high-pressure injector. A succession of 5.1-microsecond radiographs captured the propagation of the spray-induced shock waves in a gaseous medium and revealed the complex nature of the spray hydrodynamics. The monochromatic x-radiographs also allow quantitative analysis of the shock waves that has been difficult if not impossible with optical imaging. Under injection conditions similar to those found in operating engines, the fuel jets can exceed supersonic speeds and result in gaseous shock waves.
authors.affiliation: Advanced Photon Source and, Energy System Division, Argonne National Laboratory, Argonne, IL 60439, USA.
authors.forename: Andrew G
authors.initials: AG
authors.lastname: MacPhee
authors.forename: Mark W
authors.initials: MW
authors.lastname: Tate
authors.forename: Christopher F
authors.initials: CF
authors.lastname: Powell
authors.forename: Yong
authors.initials: Y
authors.lastname: Yue
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Renzi
authors.forename: Alper
authors.initials: A
authors.lastname: Ercan
authors.forename: Suresh
authors.initials: S
authors.lastname: Narayanan
authors.forename: Ernest
authors.initials: E
authors.lastname: Fontes
authors.forename: Jochen
authors.initials: J
authors.lastname: Walther
authors.forename: Johannes
authors.initials: J
authors.lastname: Schaller
authors.forename: Sol M
authors.initials: SM
authors.lastname: Gruner
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
mesh_terms: D002563:Cerium; D005742:Gasoline; D011312:Pressure; D012212:Rheology; D013459:Sulfur Hexafluoride; D017356:Synchrotrons; D013696:Temperature; D014965:X-Rays
chemical_list: D005742:Gasoline; D002563:Cerium; D013459:Sulfur Hexafluoride