Abstract
Results of experiments investigating shock wave reflections from wedges having sawtooth roughness of 0.1 mm, 0.2 mm, 0.8 mm, and 2.0 mm are presented. Observations based on direct shadowgraph diagnostic revealed that for wedges whose inclination angle was close to the critical transition angle, the foot of the incident shock interacted locally with the sawtooth steps and merged with the part of shock waves reflected from the sawtooth walls. This trend was observed for all the sawtooth wedges.
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References
Takayama, K., Gotoh, J., Ben-Dor, G.: Influence of surface roughness on shock wave transition in quasi-stationary and truly non-stationary flows. In: Proceedings of 13th ISST&W, Buffalo, pp. 326–334 (1981)
Ben-Dor, G.: Shock Wave Reflection Phenomena. Springer Verlag, Heidelberg (2007)
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Igra, D., Takayama, K., Igra, O. (2017). Shock Wave Reflection Over Roughened Wedges. In: Ben-Dor, G., Sadot, O., Igra, O. (eds) 30th International Symposium on Shock Waves 1. Springer, Cham. https://doi.org/10.1007/978-3-319-46213-4_106
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DOI: https://doi.org/10.1007/978-3-319-46213-4_106
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