OH planar laser-induced fluorescence velocity measurements in a supersonic combustor

摘要

Quantitative velocity measurements have been made in a hydrogen/air reacting flow in a supersonic combustor model. These measurements were made with an unswept ramp fuel injector in a clean-air, electrically heated supersonic combustion tunnel. A nonintrusive optical velocity measurement techniqueue based on OH planar laser- induced fluorescence (OH PLIF) has been used for this study. A narrow line-width, tunable, pulse-amplified, doubled-dye UV beam was used to resolve an OH spectral line by monitoring the laser-induced fluorescence at every point in the measurement plane.