Time-dependent radiative transfer with automatic flux limiting |
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Authors: | Dimitri Mihalas Robert Weaver |
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Institution: | Sacramento Peak Observatory, Sunspot, NM 88349, U.S.A.;X-7, Los Alamos National Laboratory, Los Alamos, NM 87545, U.S.A. |
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Abstract: | We discuss a simple method for solving the time-dependent transfer problem. This scheme is automatically flux-limited and affords physical insight into how flux limitation occurs. We then develop a second-order, time-dependent radiation energy equation that is similar in form to the diffusion limit radiation energy equation. This time-dependent energy equation approaches physically reasonable equations in optically thick and thin regions. Computational aspects of solving this energy equation are discussed. |
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