Visualizing Detonation Diffraction. Experiments: F. Pintgen , J.E.Shepherd Simulations: M. Arienti, R. Deiterding ASC RESEARCH REVIEW MAY 12-13 , 2004. Experimental Set up. 2H2+O2+68%Ar. subcritical:. Experimental Set up. Excimer pumped dye laser, 5mJ/pulse
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Experiments: F. Pintgen, J.E.Shepherd
Simulations: M. Arienti, R. Deiterding
ASC RESEARCH REVIEWMAY 12-13 , 2004
Multiple shots with 6ms delay increase
Straight portion of leading, still shock coupled, reaction front gradually decouples
PLIF image taken 70ns after Schlieren image
Keystone shaped reaction front features mainly pointing away from the axis of symmetry
Keystone-shaped reaction front features mainly pointing away from the axis of symmetry.
Contrast with “Classical” keystone in fully developed detonation
PhD thesis, Brandenburgische Technische Universiät Cottbus, 2003
Reaction front propagating transversely into shocked but unreacted region
qCJ = 6.8
qCJ = 3.5