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- W4285041490 abstract "Numerical simulation models that are used to investigate the near-Earth space plasma environment require sophisticated methods and algorithms together with high computational power. Vlasiator is a hybrid-Vlasov plasma simulation code that, as of recent technological developments, has been able to perform 6D (3D in ordinary space and 3D in velocity space) simulations using Adaptive Mesh Refinement (AMR). In this work we describe a side effect of using AMR in Vlasiator where the heterologous grid approach creates resolution induced discontinuities due to the different grid resolution levels. The discontinuities cause spurious oscillations in the electromagnetic fields that alter the global results. We present and test a spatial filtering operator for alleviating this artifact without significantly increasing the computational overhead. We demonstrate the operator's use case in large 6D AMR simulations and evaluate its performance with different implementations." @default.
- W4285041490 created "2022-07-13" @default.
- W4285041490 date "2022-07-12" @default.
- W4285041490 modified "2023-10-17" @default.
- W4285041490 title "Comment on egusphere-2022-420" @default.
- W4285041490 doi "https://doi.org/10.5194/egusphere-2022-420-rc1" @default.
- W4285041490 hasPublicationYear "2022" @default.
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