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Numerical prediction of heat transfer in liquid metal applications

DOI: 10.1615/ICHMT.2015.THMT-15.460
pages 263-266

T. Schumm
Institut fur Stromungsmechanik, Karlsruher Institut fur Technologie, Kaiserstr. 10, Geb. 10.23, 76131 Karlsruhe, Germany

M. Niemann
Institut fur Stromungsmechanik, Technische Universitat Dresden George-Bahr-Straße 3c, 01062 Dresden, Germany

Franco Magagnato
Institute of Fluid Mechanics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany

Bettina Frohnapfel
International Research Training Group Darmstadt-Tokyo on Mathematical Fluid Dynamics; Institut fur Stromungsmechanik, Karlsruher Institut fur Technologie, Kaiserstr. 10, Geb. 10.23, 76131 Karlsruhe, Germany

Jochen Frohlich
Institute for Technical Chemistry und Polymer Chemistry University of Karlsruhe; Institute of Fluid Mechanics, Dresden University of Technology, George-Bähr-Str. 3c, D-01062, Germany


Different two-equation turbulence models are investigated in their performance to predict heat transfer for low Prandtl number fluids in a backward-facing step geometry. A state of the art four-equation heat transfer model is compared to linear and non-linear RANS models and results of a DNS. To increase the physical basis of the linear models, one is exemplarily extended by an explicit algebraic formulation for the Reynolds stresses. The fluid considered is liquid sodium with constant fluid properties at 423K. Simulations are performed for a backward-facing step with a constant heat flux boundary condition applied at the bottom wall downstream the step.

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