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Shock boundary layer interaction under the influence of a normal suction slot

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Abstract

The phenomenon of shock boundary layer interaction of a shock train under the influence of a normal suction slot is studied. In previous work, it was found that a normal, circumferential suction slot is sufficient to stabilize the primary shock of a shock train in as much as that the back pressure of the shock train can be increased until the shock train gradually changes into a single normal shock. Based on the experimental and numerical results, a flow model was derived which explains the transition of a shock train into a single shock under the influence of boundary layer suction. In this work, the normal shock boundary layer interaction model is validated against flow cases with different upstream Mach and Reynolds numbers. For that purpose three different nozzle flows are investigated at various total pressure levels. In a second step, the flow model is extended to the oblique shock case, correlating the suction mass flow with the total pressure distribution of the incoming boundary layer and the static pressure downstream of the oblique shock. Finally, the influence of the suction cavity pressure onto the shock boundary layer interaction is considered.

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Acknowledgments

The research reported in this paper was funded by the DFG (German research foundation) PAK 75/1. The author also wishes to acknowledge the efforts of Wolfgang Bauer to prepare and carry out the experiments presented herein.

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Authors and Affiliations

  1. Shock Wave Laboratory, RWTH Aachen University, Templergraben 52, 52064, Aachen, Germany

    A. Weiss & H. Olivier

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  1. A. Weiss
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  2. H. Olivier
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Correspondence to A. Weiss.

Additional information

Communicated by A. Hannemann and K. Kontis.

This paper is based on work presented by the first author at the 28th International Symposium on Shock waves, Manchester, UK, July, 17-22, 2011.

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Weiss, A., Olivier, H. Shock boundary layer interaction under the influence of a normal suction slot. Shock Waves 24, 11–19 (2014). https://doi.org/10.1007/s00193-013-0456-5

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  • DOI: https://doi.org/10.1007/s00193-013-0456-5

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