Applicability of one-body model to predict thermal distribution in spent nuclear fuel pool

International Nuclear Science, Technology and Engineering Conference 2018

Roslan, Husaini^1 ; Alang Md Rashid, Nahrul Khair^1 ; Arif Sazali, Muhammad^1

Department of Energy Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Johor Bahru

81300, Malaysia^1

关键词: Active cooling;    External cooling systems;    Flux profiles;    Spent fuel pools;    Spent nuclear fuels;    Thermal distributions;    Thermal hydraulics;    Threedimensional (3-d);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/555/1/012004/pdf
DOI  :  10.1088/1757-899X/555/1/012004

来源: IOP

【 摘 要 】

An assumption system with a one-body model of spent nuclear fuel (SNF) assemblies was developed to predict the thermal distribution in the spent fuel pool (SFP) in the absence of external cooling system. It was based on the three-dimensional (3D) thermal hydraulic behaviour computed using the computational fluid dynamic (CFD) software, Fluent 18.0. This study aims to determine the applicability of the one-body model (average decay heat) by comparing it with the individuals-body model (variation of decay heat) computation results. The thermal distribution for both models were compared and evaluated, neglecting other effects such as position of the SNF assemblies, decay heat, and axial heat flux profile. It was found that the one-body model was applicable to predict the thermal distribution of the SFP during loss of active cooling system with error less than 1C.