A 2D finite element modelling of tritium permeation for the HCLL DEMO blanket module

Effects of simultaneous transfer of heat and tritium through Li–Pb or Flibe blanket

“…In the case of the HCLL blanket [2], the value of = 1.6 is estimated with the use of l wall = 3 mm, A wall = 5.2 × 10 4 m 2 , S wall-T D wall-T = 6.9 × 10 −11 mol/ms Pa 0.5 and Bi T = 10 for F82H [8] and W LiPb = 0.068 m 3 /s and S LiPb-T = 1.0 × 10 −3 mol/m 3 Pa 0.5 for Li-Pb [11]. Judging from Fig.…”

Tritium transport modeling for breeding blanket: State of the art and strategy for future development in the EU fusion program

“…However, because of its complexity, this multidisciplinary approach will be limited to the main coupling effects, i.e. tritium transport-thermal-hydraulics with MHD [4], He chemistry. A full integration into a unique suite will be done after the completion of the ITER DT-phase.…”

“…(c) Only a few physics modeling blocks have been already implemented. In some cases, coupled phenomena have been taken into account [4]. However, their validation is missing.…”

Consistent integration in preparing the helium cooled lithium lead DEMO-2007 reactor

“…Other studies performed using a finite element (FE) model showed that taking into account forced convection and diffusion for the transport of tritium in Pb-15.7Li could be compared to the benefit of a coating with PRF ∼30 in a 1D model [33,39]. As a matter of fact, tritium is transported through the Pb-15.7Li by diffusion, forced convection and buoyancy forces (due thermal gradient).…”

“…A new assessment has consequently been carried out [14] using a 1D model as in [38], but taking into account the tritium transfer through the use of an equivalent mass transfer coefficient in the Pb-15.7Li estimated to be = 1.12 10 −6 ms −1 as described in [39]. Other hypotheses are reported in [14] and in particular:…”