Simulation of Detachment in ITER-Geometry Using the UEDGE Code and a Fluid Neutral Model
✍ Scribed by F. Wising; D. A. Knoll; S. I. Krasheninnikov; T. D. Rognlien; D. J. Sigmar
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 300 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0005-8025
No coin nor oath required. For personal study only.
✦ Synopsis
We have simulated detachment in ITER, with the UEDGE code coupled to a Navier-Stokes neutral model, for realistic toroidaI geometry and plasma parameten, with a heat flux of 100 MW into the outboard SOL. For a fixed fraction of carbon, corresponding to Zeff4.5 in the SOL, the power to the outer plate is reduced by more than 90%, the peak plate temperature is reduced to about 1 eV, and the total ion saturation current drops by 85%. Volume recombination plays an important role in removing the current. Bifurcated solutions and marfe-like structures below the X-point have been found under certain conditions.