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Analysis of turbulent Rayleigh-Benard convection using low-Mach Number, variable-density DNS algorithm

DOI: 10.1615/ICHMT.2015.THMT-15.800
pages 399-402

I. Yilmaz
Department of Mechanical Engineering, Faculty of Engineering, Istanbul Aydin University, Florya, 34295, Istanbul, Turkey

Sinopsis

The results obtained from the simulation of turbulent heat transfer in Rayleigh-Benard Convection using an implicit, non-dissipative, low-Mach number, variable-density Direct Numerical Simulation (DNS) algorithm are presented. It is shown that the low-Mach number, variable-density approach performs sufficiently well to produce the evolution of instabilities from laminar to turbulence via transitional regime under the effect of thermal and buoyancy forces and the correct scaling properties of turbulent heat transfer without Boussinesq assumption.

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