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- W4384652223 abstract "Computational methods for thermal radiative transfer problems exhibit high computational costs and a prohibitive memory footprint when the spatial and directional domains are finely resolved. A strategy to reduce such computational costs is dynamical low-rank approximation (DLRA), which represents and evolves the solution on a low-rank manifold, thereby significantly decreasing computational and memory requirements. Efficient discretizations for the DLRA evolution equations need to be carefully constructed to guarantee stability while enabling mass conservation. In this work, we focus on the Su-Olson closure and derive a stable discretization through an implicit coupling of energy and radiation density. Moreover, we propose a rank-adaptive strategy to preserve local mass conservation. Numerical results are presented which showcase the accuracy and efficiency of the proposed method." @default.
- W4384652223 created "2023-07-19" @default.
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- W4384652223 date "2023-07-14" @default.
- W4384652223 modified "2023-10-18" @default.
- W4384652223 title "Energy stable and conservative dynamical low-rank approximation for the Su-Olson problem" @default.
- W4384652223 doi "https://doi.org/10.48550/arxiv.2307.07538" @default.
- W4384652223 hasPublicationYear "2023" @default.
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