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Experimental evidence of the scalar spiral range in vortical flows

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Abstract

Experimental evidence of the spiral range is provided for a diffusive passive scalar. The spectral properties of the scalar patterns acquired are compared with a numerically tracked non-diffusive patch advected by the same flow and with the spiral core, obtained by processing the original pictures. The spectra of these three geometries converge towards each other with time.

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Authors and Affiliations

  1. Imperial College London, South Kensington Campus, London, SW7 2AZ, UK

    J. M. García de la Cruz & J. C. Vassilicos

  2. CEA Saclay, DEN/DANS/DM2S/LIEFT, 91191, Gif-sur-Yvette Cedex, France

    L. Rossi

Authors
  1. J. M. García de la Cruz
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  2. L. Rossi
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  3. J. C. Vassilicos
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Correspondence to J. M. García de la Cruz.

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García de la Cruz, J.M., Rossi, L. & Vassilicos, J.C. Experimental evidence of the scalar spiral range in vortical flows. Exp Fluids 56, 2 (2015). https://doi.org/10.1007/s00348-014-1879-1

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  • DOI: https://doi.org/10.1007/s00348-014-1879-1

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