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Ray Casting and Flux Limited Diffusion

Published online by Cambridge University Press:  27 April 2011

Åke Nordlund
Åke Nordlund*
Affiliation:
Centre for Star and Planet Formation, and Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark email: aake@nbi.dk
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Abstract

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Solving radiative transfer problems with ray casting methods is compared with the commonly used ‘Flux Limited Diffusion’ approximation. Whereas ray casting produces solutions that converge to the exact one as the number of rays is increased, flux-limited-diffusion is fundamentally a ‘look-alike’ method, which produces solutions that are reminiscent of the correct solution but which cannot be made to converge to it.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S270: Computational Star Formation , May 2010 , pp. 207 - 214
Copyright
Copyright © International Astronomical Union 2011

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