PMID: 15244939Jul 13, 2004Paper

"Clusterization" and intermittency of temperature fluctuations in turbulent convection

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
A BershadskiiK R Sreenivasan

Abstract

Temperature time traces are obtained in turbulent thermal convection at high Rayleigh numbers. Measurements are made in the midplane of the apparatus, near the sidewall but outside the boundary layer. A telegraph approximation for temperature traces is generated by setting the fluctuation amplitude to 1 or 0 depending on whether or not it exceeds the mean value. Unlike the standard diagnostics of intermittency, the telegraph approximation allows one to distinguish the tendency of events to cluster (clusterization) from their large-scale variability in amplitude. A qualitative conclusion is that amplitude intermittency might mitigate clusterization effects.

References

Dec 1, 1989·Physical Review A: General Physics·M SanoA Libchaber
Jul 4, 1988·Physical Review Letters·R R PrasadK R Sreenivasan
Jun 13, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·K R SreenivasanJ J Niemela

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Citations

May 17, 2018·Royal Society Open Science·Abhishek Kumar, Mahendra K Verma
Mar 16, 2007·Physical Review Letters·Quan ZhouKe-Qing Xia
May 21, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·K R SreenivasanJ J Niemela
Jun 29, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Heng-Dong XiKe-Qing Xia

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