tailieunhanh - Two- and three-dimensional experiments for oxide pool in in-vessel retention of core melts

The measured Nusselt numbers showed a trend similar to those of existing studies, but the absolute values showed discrepancies owing to the high Prandtl number of this system. The measured angle-dependent Nusselt numbers were analyzed for 2-D and 3-D geometries, and a multiplier was developed that enables the extrapolation of 2-D data into 3-D data. | Two- and three-dimensional experiments for oxide pool in in-vessel retention of core melts Nuclear Engineering and Technology 49 (2017) 1405e1413 Contents lists available at ScienceDirect Nuclear Engineering and Technology journal homepage: Original Article Two- and three-dimensional experiments for oxide pool in in-vessel retention of core melts Su-Hyeon Kim, Hae-Kyun Park, Bum-Jin Chung* Department of Nuclear Engineering, Kyung Hee University, 1732 Deogyeong-daero, Yongin-si, Gyeonggi-do 17104, Republic of Korea a r t i c l e i n f o a b s t r a c t Article history: To investigate the heat loads imposed on a reactor vessel through the natural convection of core melts in Received 10 November 2016 severe accidents, mass transfer experiments were performed based on the heat transfer/mass transfer Received in revised form analogy, using two- (2-D) and three-dimensional (3-D) facilities of various heights. The modified Ray- 10 May 2017 leigh numbers ranged from 1012 to 1015, with a fixed Prandtl number of 2,014. The measured Nusselt Accepted 29 May 2017 Available online 26 June 2017 numbers showed a trend similar to those of existing studies, but the absolute values showed discrep- ancies owing to the high Prandtl number of this system. The measured angle-dependent Nusselt numbers were analyzed for 2-D and 3-D geometries, and a multiplier was developed that enables the Keywords: Correlation extrapolation of 2-D data into 3-D data. The definition of Ra0H was specified for 2-D geometries, so that In-Vessel Retention results could be extrapolated for 3-D geometries; also, heat transfer correlations were developed. Mass Transfer © 2017 Korean Nuclear Society, Published by Elsevier Korea LLC. This is an open access article under the Multiplier CC BY-NC-ND license (). Natural Convection Oxide Pool 1. Introduction We simulated the IVR .