Statistics and scaling properties of temperature field in symmetrical non-Oberbeck-Boussinesq turbulent convection

Details Statistics and scaling properties of temperature field in symmetrical non-Oberbeck-Boussinesq turbulent convection Statistics and scaling properties of temperature field in symmetrical non-Oberbeck-Boussinesq turbulent convection

2011-08-31

arxiv.org/abs/1108.6262v1

Physics

Fluid Dynamics

28 pages, 25 figures

Scientific paper

The influence of symmetrical non-Oberbeck-Boussinesq (SNOB) effect on statistical and scaling properties of temperature field in turbulent convection is investigated experimentally in $SF_{6}$ in the vicinity of its gas-liquid critical point (CP). The main conclusion of the studies is that besides the strong $Ra$ and $Pr$ dependence of the rms of temperature fluctuations normalized by the temperature difference across the cell, different from the Oberbeck-Boussinesq (OB) case of turbulent convection, all rest of statistical and scaling properties of temperature field discussed in details are the same as in the OB case.

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