Statistical Analysis of Turbulent Natural Convection in Low Prandtl Number Fluids
Direct numerical simulations (DNS) of turbulent Rayleigh-Bénard convection for a liquid metal with Pr = 0.025 are used to perform statistical analysis, in particular to evaluate the turbulent diffusion term in the temperature variance equation. These results are compered with DNS based predictions by a standard model of the turbulent diffusion term in the temperature variance equation and by a model which was recently developed by the authors.
KeywordsPrandtl Number Rayleigh Number Large Eddy Simulation Direct Numerical Simulation Turbulent Heat
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