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Steady energy deposition at Mach 5 for drag reduction

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Abstract

Experiments addressing the effect of energy deposition via arc discharge on \(15^\circ \) half angle-truncated cone-cylinder configurations at Mach 5 flow were carried out. The arc discharge was accomplished using a setup that consisted of a power supply, a high voltage unit and tungsten electrodes. Discharge-on tests were compared to discharge-off tests to evaluate the net effect of the energy deposition. Flow visualisation revealed the presence of a heated wake downstream of the energy spot. Compression waves were observed on top of the wake of the heated channel, which were oscillatory in nature. The deposited energy of 7 W shows a repeatable influence on the measured drag force for all the models at close arc-to-nose distances.

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Authors and Affiliations

  1. School of MACE, The University of Manchester, Manchester, UK

    E. Erdem, K. Kontis & L. Yang

Authors
  1. E. Erdem
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  2. K. Kontis
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  3. L. Yang
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Correspondence to E. Erdem.

Additional information

Communicated by A. Sasoh.

The paper was based on work that was presented at the 28th International Symposium on Shock Waves, 17–22 July, 2011, Manchester, UK.

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Erdem, E., Kontis, K. & Yang, L. Steady energy deposition at Mach 5 for drag reduction. Shock Waves 23, 285–298 (2013). https://doi.org/10.1007/s00193-012-0405-8

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  • DOI: https://doi.org/10.1007/s00193-012-0405-8

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