Journal
NUCLEAR ENGINEERING AND TECHNOLOGY
Volume 48, Issue 4, Pages 906-914Publisher
KOREAN NUCLEAR SOC
DOI: 10.1016/j.net.2016.02.015
Keywords
Hemisphere; In-Vessel Retention; Mass Transfer; Natural Convection; Oxide Pool; Volumetric Heat Source
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Funding
- Ministry of Science, Information, Communication and Technology (ICT) & Future Planning (MSIP)
- Nuclear Research & Development program - National Research Foundation (NRF) [2014M2A8A1030777]
- National Research Foundation of Korea [2014M2A8A1030777] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We investigated the heat load imposed on the lower head of a reactor vessel by the natural convection of the oxide pool in a severe accident. Mass transfer experiments using a CuSO4-H2SO4 electroplating system were performed based on the analogy between heat and mass transfer. The Ra'(H) of 10(14) order was achieved with a facility height of only 0.1 m. Three different volumetric heat sources were compared; two had identical configurations to those previously reported, and the other was designed by the authors. The measured Nu's of the lower head were about 30% lower than those previously reported. The measured angular heat flux ratios were similar to those reported in existing studies except for the peaks appearing near the top. The volumetric heat sources did not affect the Nu of the lower head but affected the Nu of the top plate by obstructing the rising flow from the bottom. Copyright (C) 2016, Published by Elsevier Korea LLC on behalf of Korean Nuclear Society.
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