Summary
An experimental study of a normal shock wave subject to unsteady periodic forcing in a parallel walled duct has been conducted. Measurements of the pressure rise across the shock wave have been taken and the dynamics of unsteady shock wave motion have been analysed from high speed schlieren images. The velocity of shock wave motion is shown to be related to the instantaneous pressure ratio across a shock wave. The relative importance of geometry and pressure perturbation frequency on dynamic shock wave behaviour is considered and the concept of a critical frequency is proposed, which relates the two. In the absence of flow separation the effects of viscosity on the dynamics of unsteady shock wave motion appear to be small. Further work establishing non-dimensional relations is proposed to improve the general applicability of the findings of this study.
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© 2009 Springer-Verlag Berlin Heidelberg
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Bruce, P., Babinsky, H. (2009). Dynamics of unsteady shock wave motion. In: Hannemann, K., Seiler, F. (eds) Shock Waves. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85181-3_71
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DOI: https://doi.org/10.1007/978-3-540-85181-3_71
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-85180-6
Online ISBN: 978-3-540-85181-3
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