Direct and Large Eddy Simultation or Turbulent Heat Transfer at Very Low Prandtl Number: Application to Lead-bismuth Flows

Bricteux, Laurent;Duponcheel, Matthieu;Winckelmans, Grégoire;Tiselj, I.;Bartosiewicz, Yann
(2012) Nuclear Engineering and Design : an international journal devoted to the thermal, mechanical, materials, and structural aspects of nuclear fission energy — Vol. 246, p. 91-97 (2012)

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Abstract
This paper deals with the issue of modeling convective turbulent heat transfer of a liquid metal with a Prandtl number down to 0.01, which is the order of magnitude of lead–bismuth eutectic in a liquid metal reactor. This work presents a DNS (direct numerical simulation) and a LES (large eddy simulation) of a channel flow at two different Reynolds numbers, and the results are analyzed in the frame of best practice guidelines for RANS (Reynolds averaged Navier–Stokes) computations used in industrial applications. They primarily show that the turbulent Prandtl number concept should be used with care and that even recent proposed correlations may not be sufficient.
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  • Institution iconUCLouvainEPL/MECA - Département de mécanique
  • Institution iconUCLouvainEPL/EPL - Ecole Polytechnique de Louvain

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Bricteux, L., Duponcheel, M., Winckelmans, G., Tiselj, I., & Bartosiewicz, Y. (2012). Direct and Large Eddy Simultation or Turbulent Heat Transfer at Very Low Prandtl Number: Application to Lead-bismuth Flows. Nuclear Engineering and Design : an international journal devoted to the thermal, mechanical, materials, and structural aspects of nuclear fission energy, 246, 91-97. https://doi.org/10.1016/j.nucengdes.2011.07.010 (Original work published 2012)