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Most singular vortex structures in fully developed turbulence

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 نشر من قبل Vainshtein
 تاريخ النشر 2003
  مجال البحث فيزياء
والبحث باللغة English
 تأليف S.I. Vainshtein




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Using high Reynolds number experimental data, we search for most dissipative, most intense structures. These structures possess a scaling predicted by log-Poisson model for the dissipation field $epsilon_r$. The probability distribution function for the exponents $alpha$, $epsilon_rsim e^{alpha a}$, has been constructed, and compared with Poisson distribution. These new experimental data suggest that the most intense structures have co-dimension less than 2. The log-Poisson statistics is compared with log-binomial which follows from the random $beta$-model.



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