Flame stabilization in high pressure LOx/GH2 and GCH4 combustion

Planar laser induced fluorescence (PLIF) of OH is used to examine flame stabilization in high pressure cryogenic flames formed by injecting a central jet of low speed liquid oxygen surrounded by a high speed gaseous stream of hydrogen or methane. In the LOx/GH2 experiments injection conditions are transcritical as the chamber pressure is above critical but the temperature is below critical (pLOx=6.3MPa>pc(O2)=5.04MPa,TLOx=80K