It is shown that high-speed (5 kHz) planar laser induced fluorescence (PLIF) can be used in multiphase reactive systems. It has been used to characterize the qualitative OH concentration in the gas phase near the surface of solids, liquids, and gels. In addition to the gas phase OH concentration, some solid propellants, gels, and liquids were found to fluoresce when exposed to the laser radiation centered at 283.2 nm. The simultaneous imaging of the condensed phases and gas phase OH radical fluorescence has proven to be useful for various measurements, and several examples are presented. This paper presents a summary of recent studies conducted on multiphase systems and techniques employed to examine these systems using high speed PLIF. The limitations and future extensions of the technique are also discussed.
展开▼
