Abstract
The amount of OH species behind the shock wave from detonation-driven shock tubes is of prime importance. In this paper, the flow emanating from a miniature detonation-driven shock tube (m-DDST), which uses 5 bar of in situ generated oxyhydrogen mixture, is investigated. OH-PLIF is employed to characterize the relative OH distribution in the flow. Schlieren-shadowgraph imaging is also carried out to understand the flow features and to monitor the temporal evolution of the flow. Due to multiple reflections in the detonation driver, there are two distinct flashes observed during flow evolution which are captured in the OH-PLIF experiments. Predominant amount of OH radicals is observed after the Mach disc in the evolving flow field. Future studies are planned to map the absolute concentration of the OH radicals and ultimately to obtain the temperature distribution in the flow regime.
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Acknowledgment
Ministry of Human Resource Development (MHRD), India; Defence Research and Development Organization (DRDO), India; Council for Scientific and Industrial Research (CSIR), India; Science and Engineering Research Board (SERB), India.
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Karthick, S.K., Rajitha, P.R., Janardhanraj, S., Krishna, Y., Jagadeesh, G. (2019). PLIF-Based Concentration Measurement of OH Behind the Blast Wave Emanating from an Oxyhydrogen Detonation-Driven Shock Tube. In: Sasoh, A., Aoki, T., Katayama, M. (eds) 31st International Symposium on Shock Waves 1. ISSW 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-91020-8_26
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DOI: https://doi.org/10.1007/978-3-319-91020-8_26
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