Abstract
A fully three-dimensional analysis is carried out on an overexpanded rocket engine nozzle configuration to investigate the role of the internal shock-induced separation on the mechanism of generation of side loads during start-up and shutdown transients. A hybrid URANS/LES approach based on the delayed detached eddy simulation turbulence model is used. Reasonable good agreement is obtained between numerical and experimental results. The numerical wall-pressure spectrum shows a narrow peak that a dynamic mode decomposition reveals to be associated with a mode whose characteristics resemble the experimental azimuthal mode believed to be the cause of the generation of side loads.
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23 May 2019
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Sansica, A., Robinet, JC., Goncalves, E., Herpe, J. (2019). Three-Dimensional Instability of Shock-Wave/Boundary-Layer Interaction for Rocket Engine Nozzle Applications. In: Sasoh, A., Aoki, T., Katayama, M. (eds) 31st International Symposium on Shock Waves 2. ISSW 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-91017-8_67
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DOI: https://doi.org/10.1007/978-3-319-91017-8_67
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