Simulation of the key phenomena in nuclear reactor two-phase flow and severe accident with particle method

被引：0

作者：

Chen, RongHua ^{[1
,2
]}

Tian, WenXi ^{[1
,2
]}

Guo, KaiLun ^{[1
,2
]}

Zhang, Kui ^{[1
,2
]}

Qiu, SuiZheng ^{[1
,2
]}

Su, GuangHui ^{[1
,2
]}

机构：

[1] School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an,710049, China

[2] Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology, Xi’an,710049, China

来源：

Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica | 2024年 / 54卷 / 07期

关键词：

Computational methods - Computer software - Coolants - Molten materials - Simulation platform - Solidification - Two phase flow;

D O I：

10.1360/SST-2023-0296

中图分类号：

学科分类号：

摘要：

This study aims to address important and difficult problems in the thermal safety field, such as the boiling and two-phase flow of nuclear reactor coolant and the migration behavior of molten materials during severe accidents. A high-precision solution technique was proposed using the moving particle semi-implicit method. A two-phase flow particle model was established to capture the complex interface between phases with a large density ratio and simulate the vapor-liquid phase transition. Specifically, a particle method model was developed for analyzing the processes of oxidation eutectic, high-temperature creep, remelting-solidification, and the relocation of degraded nuclear reactor cores during severe accidents. To this end, a complex process analysis software platform PANDA was developed based on the particle method for investigating key thermal safety phenomena in nuclear reactors; thus, the accurate simulation of complex phenomena such as the two-phase flow bubble dynamics of nuclear reactor coolant and severe accidents was effectively realized. © 2024 Chinese Academy of Sciences. All rights reserved.

引用

页码：1318 / 1328

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