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

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Authors :
Document type : Article de périodique (Journal article) – Article de recherche
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.
Access type : Accès restreint
Publication date : 2012
Language : Anglais
Journal information : "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 (May 2012)
Peer reviewed : yes
Publisher : Elsevier BV ((Netherlands) Amsterdam)
issn : 0029-5493
e-issn : 1872-759X
Publication status : Publié
Affiliations : UCL - EPL/MECA - Département de mécanique
UCL - EPL/EPL - Ecole Polytechnique de Louvain
Links :
Bibliographic reference Bricteux, Laurent ; Duponcheel, Matthieu ; Winckelmans, Grégoire ; Tiselj, I. ; Bartosiewicz, Yann. Direct and Large Eddy Simultation or Turbulent Heat Transfer at Very Low Prandtl Number: Application to Lead-bismuth Flows. In: 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 (May 2012)
Permanent URL http://hdl.handle.net/2078.1/91782