Finite element analysis of hydrogen retention in ITER plasma facing components using FESTIM

摘要: Abstract The behaviour of hydrogen isotopes in ITER monoblocks was studied using the code FESTIM (Finite Element Simulation Tritium In Materials) which is introduced this publication. has been validated by reproducing experimental data and Method Manufactured Solutions used for analytical verification. Following relevant plasma scenarios, both transient heat transfer (HIs) diffusion have simulated order to assess HIs retention monoblocks. Relevant materials properties used. Each cycle composed a current ramp up, plateau, down resting phase before following shot. 100 cycles are simulated. total inventory tokamak during phases reaches 1.8 × 10 − 3 mg whereas implantation it keeps increasing as power law time. Particle flux on cooling channel monoblock also computed. breakthrough time estimated be t = 1 5 s corresponds 24 cycles. Relevance 2D modelling demonstrated comparing obtained 1D simulations. Using simulations, relative error observed compared simulations can reach -25% phase. increasing.