期刊
NUCLEAR ENGINEERING AND TECHNOLOGY
卷 52, 期 4, 页码 708-720出版社
KOREAN NUCLEAR SOC
DOI: 10.1016/j.net.2019.09.009
关键词
Porous medium model; Hybrid medium model; Conjugate heat transfer; Inter-wrapper flow; Sodium-cooled fast reactor
资金
- Natural Science Foundation of China [11605131, 11705139, 11675127]
- K. C. Wong Education Foundation
Core-wide temperature distribution in sodium-cooled fast reactor plays a key role in its decay heat removal process, however the prediction for temperature distribution is quite complex due to the conjugate heat transfer between the assembly flow and the inter-wrapper flow. Hybrid medium model has been proposed for conjugate heat transfer modeling in the core. The core is modeled with a Realistic modeled inter-wrapper flow and hybrid medium modeled assembly flow. To validate present model, simulations for a three-assembly model were performed with Realistic modeling, traditional porous medium model and hybrid medium model, respectively. The influences of Uniform/Non-Uniform power distribution among assemblies and the Peclet number within the assembly flow have been considered. Compared to traditional porous medium model, present model shows a better agreement with in Realistic modeling prediction of the temperature distribution and the radial heat transfer between the inter-wrapper flow and the assembly flow. (C) 2019 Korean Nuclear Society, Published by Elsevier Korea LLC.
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