Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session BP11: Poster Session I: In-Person, Hall A (9:30-11:00am) and Virtual Poster Presentations (11:15am-12:30pm)
MFE: Analytical,computational; Energetic Particles; Disruptions; Power Handling
ICF: Z-Pinch; MagnetoInertial Fusion; Hydrodynamics; Indirect drive
9:30 AM - 12:30 PM
Monday, October 17, 2022
Room: Exhibit Hall A and Online
Abstract: BP11.00073 : SOLPS-ITER Wide Grid implementation in different divertor geometries*
Presenter:
Ivan Paradela Perez
(Oak Ridge National Lab)
Authors:
Ivan Paradela Perez
(Oak Ridge National Lab)
Jeremy D Lore
(Oak Ridge National Lab)
MD SHAHINUL ISLAM
(Oak Ridge National Lab)
The standard B2.5 grids limit the contact of the plasma to the targets, while wide grids allow particle and heat loads onto other elements, such as the main chamber walls or limiter surfaces, to be captured. This enables estimation of neutral production (recycling and sputtering) from the first wall components, and avoids an artificial vacuum region in the far-SOL which overestimates neutral mean free paths. Additionally, intersecting elements within the divertor region may either force the creation of very narrow classical computational grids or the modification of the divertor geometry to avoid such issue. This can result in solutions that depend on the boundary conditions selected for the outer radial surfaces, which are poorly constrained by physical processes. With wide grids, the correct divertor geometry can be used without a strong influence of boundary conditions on the near Scrape-Off Layer.
*Support from US DOE DE-AC05-00OR22725.
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