This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1002/ctpp.201610011 in citations.
Please use the identifier: http://hdl.handle.net/2128/15245 in citations.
Hybrid Formulation of Radiation Transport in Optically Thick Divertor Plasmas
Hybrid Formulation of Radiation Transport in Optically Thick Divertor Plasmas
Kinetic Monte Carlo simulations of coupled atom-radiation transport in optically thick divertor plasmas can be computationally very demanding, in particular in ITER relevant conditions or even larger devices, e.g. for power plant divertor studies. At high (∼ 1015 cm–3) atomic densities, it can be sh...
Saved in:
Personal Name(s): | Rosato, J. (Corresponding author) |
---|---|
Marandet, Y. / Bufferand, H. / Reiter, D. / Stamm, R. | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Contributions to plasma physics, 56 (2016) 6-8, S. 663 - 668 |
Imprint: |
Weinheim
Wiley-VCH
2016
|
DOI: |
10.1002/ctpp.201610011 |
Document Type: |
Journal Article |
Research Program: |
Plasma-Wall-Interaction |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/15245 in citations.
Kinetic Monte Carlo simulations of coupled atom-radiation transport in optically thick divertor plasmas can be computationally very demanding, in particular in ITER relevant conditions or even larger devices, e.g. for power plant divertor studies. At high (∼ 1015 cm–3) atomic densities, it can be shown that sufficiently large divertors behave in certain areas like a black body near the first resonance line of hydrogen (Lyman α). This suggests that, at least in part, the use of continuum model (radiation hydrodynamics) can be sufficiently accurate, while being less time consuming. In this work, we report on the development of a hybrid model devoted to switch automatically between a kinetic and a continuum description according to the plasma conditions. Calculations of the photo-excitation rate in a homogeneous slab are performed as an illustration. The outlined hybrid concept might be also applicable to neutral atom transport, due to mathematical analogy of transport equations for neutrals and radiation. |