A flux-limited diffusion theory

Details A flux-limited diffusion theory A flux-limited diffusion theory

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...248..321l&link_type=abstract

Astrophysical Journal, Part 1, vol. 248, Aug. 15, 1981, p. 321-334.

Astronomy and Astrophysics

Astrophysics

266

Diffusion Theory, Radiant Flux Density, Radiative Transfer, Transport Theory, Boltzmann Transport Equation, Boundary Value Problems, Diffusion Coefficient, Gaseous Diffusion

Scientific paper

A diffusion theory for radiative transfer is derived which is naturally flux limited, i.e., the magnitude of the flux can be no greater than the density times the maximum transport speed. Numerical comparisons with exact solutions of the equation of transfer indicate that this approximate theory is significantly more accurate than classical isotropic diffusion theory (the Eddington approximation) and asymptotic diffusion theory.

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