"Clusterization" and intermittency of temperature fluctuations in turbulent convection

A. Bershadskii, J. J. Niemela, A. Praskovsky, K. R. Sreenivasan

Research output: Contribution to journalArticle

Abstract

The clusterization and amplitude intermittency of temperature fluctuations in turbulent convection were investigated. The temperature time traces were obtained in turbulent thermal convection at high Rayleigh numbers. A telegraph approximation for temperature traces were generated by setting the fluctuation amplitudes to 1 or 0, which allowed to distinguish the tendency of events to cluster from their large-scale variability in amplitude. The telegraphic approximation is useful because of the specific process of heat transfer, which was determined in large measures by the random motion of temperature plumes.

Original languageEnglish (US)
Article number056314
Pages (from-to)056314-1-056314-5
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume69
Issue number5 1
StatePublished - May 2004

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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