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physics.comp-ph2025
Consistent Solutions of the Radiation Diffusion Equation in Spherical and Cylindrical Geometries
Ethan Smith, Evan Bursch, Ryan G. McClarren
We have extended the radiation diffusion model of Hammer and Rosen to diverging spherical and cylindrical geometries. The effect of curvilinear geometry on the supersonic, expandin…
physics.comp-ph2024
High Energy Density Radiative Transfer in the Diffusion Regime with Fourier Neural Operators
Joseph Farmer, Ethan Smith, William Bennett +1
Radiative heat transfer is a fundamental process in high energy density physics and inertial fusion. Accurately predicting the behavior of Marshak waves across a wide range of mate…
physics.comp-ph2022
Variable Dynamic Mode Decomposition for Estimating Time Eigenvalues in Nuclear Systems
Ethan Smith, Ilham Variansyah, Ryan McClarren
We present a new approach to calculating time eigenvalues of the neutron transport operator (also known as eigenvalues) by extending the dynamic mode decomposition (DMD) to all…