High-Fidelity Discontinuous Galerkin Method for Physics-Based Space Weather Modeling
Name
JVP2023_AIAA_SpaceWeather.pdf
Size
8.92 MB
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Adobe PDF
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1e9e4bf46abbed26d6cb778b11649243
Author(s)
Vila-Pérez, Jordi
Nguyen, Cuong
Peraire, Jaime
Date Issued
January 19, 2023
Publisher
American Institute of Aeronautics and Astronautics
Citation
Jordi Vila-Pérez, Cuong Nguyen and Jaime Peraire. "High-Fidelity Discontinuous Galerkin Method for Physics-Based Space Weather Modeling," AIAA 2023-1958. AIAA SCITECH 2023 Forum. January 2023.
Version
Author's final manuscript
Abstract
Physics-based models of the ionosphere–thermosphere system have been devised as a necessary tool to predict atmospheric outputs for different space applications. For example, for obtaining reliable predictions of atmospheric drag for low-Earth orbiting satellites or forecasting purposes of extreme space weather events. To this end, this study proposes a high-fidelity approach for physics-based space weather modeling based on the discontinuous Galerkin (DG) method. The proposed model describes an atmosphere in non-hydrostatic equilibrium
driven by the extreme ultraviolet (EUV) radiation from the Sun. The multiscale variations in the radial and angular directions are managed in a non-segregated strategy, employing a proper scaling of the momentum and energy variables. On the other hand, the logarithm of the density is introduced as the primary quantity to deal with the low densities present in the upper atmosphere. The numerical scheme combines a matrix-free approach suitable for high-performance computing on graphic processors (GPUs). A numerical example reproducing solar equinox conditions is presented in this work to validate the proposed methodology.
Description
AIAA SCITECH 2023 Forum 23-27 January 2023 National Harbor, MD & Online
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Terms of Use
Creative Commons Attribution-Noncommercial-ShareAlike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.2514/6.2023-1958
