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Simultaneous concentration and velocity field measurements in a shock-accelerated mixing layer

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Abstract

A novel technique to obtain simultaneous velocity and concentration measurements is applied to the Richtmyer–Meshkov instability. After acceleration by a Mach 2.2 shock wave, the interface between the two gases develops into a turbulent mixing layer. A time-separated pair of acetone planar laser-induced fluorescence images are processed to yield concentration and, through application of the Advection-Corrected Correlation Image Velocimetry technique, velocity fields. This is the first application of this technique to shock-accelerated flows. We show that when applied to numerical simulations, this technique reproduces the velocity field to a similar quality as particle image velocimetry. When applied to the turbulent mixing layer of the experiments, information about the Reynolds number and anisotropy of the flow is obtained.

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Acknowledgments

The authors would like to thank Dr. Xylar Asay-Davis for his valuable correspondence and assistance with the ACCIV software. This research was partially supported by US Department of Energy Grant DE-FG52-06NA26196.

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Authors and Affiliations

  1. Department of Engineering Physics, University of Wisconsin—Madison, Madison, WI, 53706, USA

    Daniel Reese, Jason Oakley, Alonso Navarro-Nunez & Riccardo Bonazza

  2. Department of Mechanical Engineering, University of Wisconsin—Madison, Madison, WI, 53706, USA

    David Rothamer

  3. Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA

    Chris Weber

Authors
  1. Daniel Reese
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  2. Jason Oakley
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  3. Alonso Navarro-Nunez
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  4. David Rothamer
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  5. Chris Weber
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  6. Riccardo Bonazza
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Correspondence to Daniel Reese.

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Reese, D., Oakley, J., Navarro-Nunez, A. et al. Simultaneous concentration and velocity field measurements in a shock-accelerated mixing layer. Exp Fluids 55, 1823 (2014). https://doi.org/10.1007/s00348-014-1823-4

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  • DOI: https://doi.org/10.1007/s00348-014-1823-4

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