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 GO07: Laboratory Plasma Astrophysics
9:30 AM–12:18 PM,
Tuesday, October 18, 2022
Room: 401 ABC
Chair: Sergey Lebedev, Imperial College London
Abstract: GO07.00013 : Modelling radiative collapse in high energy density systems using static mesh refinement*
11:54 AM–12:06 PM
Presenter:
Nikita Chaturvedi
(Imperial College London)
Authors:
Nikita Chaturvedi
(Imperial College London)
Jeremy P Chittenden
(Imperial College London)
Jack D Hare
(MIT PSFC)
To simulate the above system, it is critical to capture the dynamics of both the reconnection layer (of spatial order 100um) and the wire arrays (of order 10cm across). Resolving features with at least three orders of magnitude difference is intractable on a uniform simulation grid, and requires a mesh refinement capability, such as that newly implemented in the radiation-MHD code, Chimera. Using this capability, it is found that the plasmoid instability typically observed in the reconnection layer simulations is sensitive to cell resolution, 3D effects and radiation treatment. This talk investigates the balance between achieving sufficient resolution to capture plasmoids formation, and both 3D effects and radiative cooling disrupting the onset of this instability.
*Sponsored by First Light Fusion Ltd.
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