Decay of passive scalar fluctuations in axisymmetric turbulence

ORAL

Abstract

Passive scalar fluctuations in axisymmetric Saffman turbulence are examined theoretically and numerically. Theoretical predictions are verified by direct numerical simulation (DNS). According to the DNS, self-similar decay of the turbulence and the persistency of the large-scale anisotropy are found for its fully developed turbulence. The DNS confirms the time-independence of the Corrsin integral.

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Authors

  • Katsunori Yoshimatsu

    Nagoya Univ

  • Peter A. Davidson

    University of Cambridge

  • Yukio Kaneda

    Aichi Institute of Technology