COMPARISON BETWEEN PHASE FIELD SIMULATIONS AND EXPERIMENTAL DATA FROM INTRAGRANULAR BUBBLE GROWTH IN UO_2

摘要

In this work, we used the phase field method to simulate the post-irradiation annealing of UO_2 described in the experimental work by Kashibe et al., 1993. The simulations were carried out in 2D and 3D using the MARMOT FEM-based phase-field modeling framework. The 2-D results compared fairly well with the experiments, in spite of the assumptions made in the model. The 3-D results compare even more favorably to experiments, indicating that diffusion in all three directions must be considered to accurate represent the bubble growth.