Numerical prediction of turbulent heat transfer at low Prandtl number

This paper is concerned with comparing different approaches for the numerical prediction of heat transfer in a turbulent channel flow at very low Prandtl number and high Reynolds number. Results obtained with a Reynolds Averaged Navier Stokes (RANS) approach at relevant Reynolds numbers for the liqu...

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Bibliographic Details
Published in:Journal of physics. Conference series 2012-01, Vol.395 (1), p.12044-8
Main Authors: Bricteux, L, Duponcheel, M, Manconi, M, Bartosiewicz, Y
Format: Article
Language:English
Subjects:
Channel flow
Computational fluid dynamics
Direct numerical simulation
Fluid flow
Heat transfer
High Reynolds number
Large eddy simulation
Liquid metals
Mathematical models
Navier-Stokes equations
Numerical prediction
Physics
Prandtl number
Reynolds averaged Navier-Stokes method
Reynolds number
Temperature profiles
Thermal energy
Turbulence
Turbulent flow
Turbulent heat transfer
Velocity distribution
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Summary:This paper is concerned with comparing different approaches for the numerical prediction of heat transfer in a turbulent channel flow at very low Prandtl number and high Reynolds number. Results obtained with a Reynolds Averaged Navier Stokes (RANS) approach at relevant Reynolds numbers for the liquid metal reactor problematic (Rer 590, Rer 1020), are presented and discussed. Original results obtained with a wall resolved Large Eddy Simulations (LES) at Rer 2000 are provided. The velocity profile agrees very well with that of a reference Direct Numerical simulation (DNS). The obtained temperature profile can serve as a reference as the energy equation is computed without any Subgrid Scale (SGS) model at this low Pr.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/395/1/012044