Preliminary Numerical Simulation of Fuel Assembly Deformation under Non-Homogeneous Irradiation Environment
-
摘要: 以典型17×17燃料组件为研究对象,考虑非均匀快中子环境、材料辐照效应等因素,基于一定的假设与简化,初步实现了燃料组件整体辐照变形的三维数值模拟。模拟结果表明,在所设定的较大快中子注量和快中子注量梯度作用下,燃料组件仍具有较低的整体应力水平,但其引起的燃料组件辐照变形会对控制棒落棒和燃料组件装卸造成一定影响。Abstract: Considering non-homogeneous fast neutron environment and material irradiation effects, numerical simulation of typical 17×17 fuel assembly overall deformation is preliminary realized based on assumptions and simplification. Under the inputs of large fast neutron fluence and fast neutron fluence gradient given in this paper, simulation results indicate that the fuel assembly has low stress level, but the control rod drop and refueling are affected by fuel assembly irradiation deformation.
-
Key words:
- Fuel assembly /
- Deformation /
- Irradiation /
- Numerical simulation
-
计量
- 文章访问数: 9
- HTML全文浏览量: 3
- PDF下载量: 0
- 被引次数: 0