摘要(英) |
The use of nuclear fuel results in long-term high-level radiation and decay heat, which must be effectively isolated from the biosphere. The internationally recognized safest and most effective disposal method is deep geological disposal.
This study is based on the concept of deep geological disposal and utilizes finite element ABAQUS to simulate the thermal conduction analysis of the host rock fracture zone and waste container body in the disposal site. The research refers to the geometric and material parameters, initial and boundary conditions provided in the DECOVALEX literature of international plans. Additionally, a quarter representative volume element concept is used to establish an equivalent model, which calculates the peak temperature and resaturation time of the buffer material and verifies it in parallel with the literature. Furthermore, numerical impact analysis is carried out on the geometry of the host rock fracture.
In addition, there are multiple types of waste container bodies in the KBS-3V disposal method. This paper refers to the Finnish POSIVA literature to study the peak temperature of fuel rods and waste container bodies during the disposal process, and carries out parameter analysis on the influence of boundary conditions.
The final chapter of this study conducted a numerical simulation analysis of pressure vessel thermal shock, referring to literature on nuclear engineering and design. The objective was to explore the effects of thermal shock on the vessel and validate the findings by comparing them with existing research results. |
參考文獻 |
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