X-ray imaging of shock waves generated by high-pressure fuel sprays.
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.
MacPhee
Andrew G
AG
Advanced Photon Source and, Energy System Division, Argonne National Laboratory, Argonne, IL 60439, USA.
Tate
Mark W
MW
Powell
Christopher F
CF
Yue
Yong
Y
Renzi
Matthew J
MJ
Ercan
Alper
A
Narayanan
Suresh
S
Fontes
Ernest
E
Walther
Jochen
J
Schaller
Johannes
J
Gruner
Sol M
SM
Wang
Jin
J
D002563:Cerium; D005742:Gasoline; D011312:Pressure; D012212:Rheology; D013459:Sulfur Hexafluoride; D017356:Synchrotrons; D013696:Temperature; D014965:X-Rays
D005742:Gasoline; D002563:Cerium; D013459:Sulfur Hexafluoride