Sensing key species during fuel oxidation in a shock tube using absorption spectroscopy
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Measurement of the OH radical in the ground state was made for a mixture of H2/O2diluted in 98% argon within a shock tube behind the reflected shock wave. Tests were recorded at temperatures of 1170 to 1548 K and pressures of 12.0 to 13.4 atm. Absorption spectroscopy of OH was recorded by way of light from a high-power xenon source passed through the shock tube and into a spectrometer with an EFL of 500 mm. Data recorded with this method were calibrated to mechanism predictions which have been validated by laser absorption spectroscopy experiments. The diagnostic demonstrated in this study is a relatively inexpensive method for obtaining important species time history information that can be useful for validating chemical kinetics mechanisms. © 2013 by the authors.
author list (cited authors)
Aul, C. J., & Petersen, E. L.