Abstract
Detonation-based engines represent a challenging application for diagnostics due to the wide range of thermodynamic conditions involved (T~500-3000 K, P~2-60 atm) and the short time scales of change (~10− 6 to 10− 4 sec) associated with such systems. Non-intrusive laser absorption diagnostics can provide high time-resolution and have been employed extensively in shock tube kinetics experiments (P~1-20 atm), offering high potential for application in detonation environments with modest utilization to date [1-4]. Limiting factors in designing effective tunable laser absorption sensors for detonation engines can be divided into two sets of challenges: high-pressure, high-temperature absorption spectroscopy and harsh thermo-mechanical environments. The present work, conducted in a high-pressure shock tube and operating detonation combustor, addresses both sets of difficulties, with the objective of developing time-resolved, in-situ temperature and concentration sensors for detonation studies.
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Spearrin, R.M., Goldenstein, C.S., Jeffries, J.B., Hanson, R.K. (2015). Mid-infrared Laser Absorption Diagnostics for Detonation Studies. In: Bonazza, R., Ranjan, D. (eds) 29th International Symposium on Shock Waves 1. ISSW 2013. Springer, Cham. https://doi.org/10.1007/978-3-319-16835-7_39
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DOI: https://doi.org/10.1007/978-3-319-16835-7_39
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-16834-0
Online ISBN: 978-3-319-16835-7
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