Numerical Simulation of Melting Behavior of 2×2 Rod Bundle Structure Based on MPS Algorithm

被引：0
|
作者：
He M. [1 ]
Fu S. [1 ]
Yu H. [1 ]
机构：
[1] College of Nuclear Science and Technology, Naval University of Engineering, Wuhan
来源：
Hedongli Gongcheng/Nuclear Power Engineering | 2022年 / 43卷 / 05期
关键词：
MPS; Positioning grid; Serious accident;
D O I：
10.13832/j.jnpe.2022.05.0147
中图分类号：
学科分类号：
摘要：
Taking the 2 × 2 rod bundle structure of typical pressurized water reactor fuel assembly as the research object, the three-dimensional model of rod bundle with and without positioning grid is established. Based on the semi-implicit moving particle algorithm (MPS), the melting behavior of the rod bundle structure under the background of serious accidents is numerically simulated, and the influence of the positioning grid on the flow channel blocking process in the rod bundle melting process is analyzed. The results show that the MPS algorithm can better simulate the melting behavior of the rod bundle structure, and the positioning grid will speed up the melting process of the core and the blocking speed of the cooling channel. The research results in this paper are beneficial to the optimization and improvement of the core melting model under severe accident. © 2022 Yuan Zi Neng Chuban She. All rights reserved.
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页码：147 / 153
页数：6
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