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Slowly mixing cylinder in a cone-shaped nozzle

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Abstract

We report on a surprising phenomenon in a turbulent jet setup which uses a cone-shaped nozzle with an excentric inlet. Inside the nozzle a slowly mixing, rotating cylinder surface was observed. The speed of mixing on this cylinder surface is reduced by approximately a factor of 8 compared to the remaining flow field of the nozzle. The phenomenon seems to be independent of the Reynolds number and the pressure distribution inside the nozzle.

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Acknowledgements

The experiments presented here are part of the research project I/77 313 of the German Volkswagen Foundation. We want to thank our colleagues M. Haase, S. Metev, A. Mora, P. Plath, T. Rabbow, and A. Stephen for many fruitful discussions and helpful ideas, as well as M. Holthaus for discussions about cantori.

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Authors and Affiliations

  1. Institute of Physics, Carl von Ossietzky University of Oldenburg, Oldenburg, Germany

    Juergen Linke, Peter Neumeyer, Matthias Waechter & Joachim Peinke

Authors
  1. Juergen Linke
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  2. Peter Neumeyer
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  3. Matthias Waechter
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  4. Joachim Peinke
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Correspondence to Joachim Peinke.

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Linke, J., Neumeyer, P., Waechter, M. et al. Slowly mixing cylinder in a cone-shaped nozzle. Exp Fluids 42, 811–814 (2007). https://doi.org/10.1007/s00348-007-0295-1

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  • DOI: https://doi.org/10.1007/s00348-007-0295-1

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