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Influence of skin depth on convective heat transfer in induction heating

Renaudière de Vaux, Sébastien and Zamansky, Rémi and Bergez, Wladimir and Tordjeman, Philippe and Bouyer, Viviane and Haquet, Jean-François Influence of skin depth on convective heat transfer in induction heating. (2017) Magnetohydrodynamics, 53 (4). 611-618. ISSN 1574-0579

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Official URL: http://doi.org/10.22364/mhd

Abstract

We investigate convection driven by induction heating of a horizontal fluid layer using direct numerical simulations (DNS). This problem is of particular interest in the context of nuclear severe accident mastering. In a real severe accident, the molten core is subjected to homogeneous internal sources resulting from nuclear disintegrations. This situation is mimicked in the laboratory using induction heating as the internal source. In induction heating, however, heat sources are localized in the skin layer. Consequently, this concentration of heat may modify the flow and wall heat transfer compared to the case of homogeneous internal sources. DNS are carried out for three typical skin depths and three total deposited powers. Skin depth variations show surprising results regarding flow structures and heat transfer. It is found that the heat sources' heterogeneity has a weak effect on flow patterns. Consequently, models of heat transfer in the case of homogeneous sources remain valid even with strong localized heating near the bottom.

Item Type:Article
Additional Information:Thanks to Institute of Physics, University of Latvia editor. The definitive version is available at http://www.mhd.sal.lv/ The original PDF of the article can be found at http://www.mhd.sal.lv/contents/2017/4/MG.53.4.3.R.html
Audience (journal):Special issue journal
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Sebastien RENAUDIERE DE VAUX
Deposited On:07 Feb 2018 09:42

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