Open AccessA faster algorithm for smoothed particle hydrodynamics with radiative transfer in the flux‐limited diffusion approximation
Author(s) -
Whitehouse Stuart C.,
Bate Matthew R.,
Monaghan Joe J.
Publication year - 2005
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2005.09683.x
Subject(s) - physics , smoothed particle hydrodynamics , radiative transfer , flux (metallurgy) , diffusion , algorithm , particle (ecology) , gauss , mathematics , mechanics , computational physics , optics , computer science , quantum mechanics , materials science , metallurgy , oceanography , geology
We describe a new, faster implicit algorithm for solving the radiation hydrodynamics equations in the flux‐limited diffusion approximation for smoothed particle hydrodynamics. This improves on the method elucidated in Whitehouse and Bate by using a Gauss–Seidel iterative method rather than iterating over the exchange of energy between pairs of particles. The new algorithm is typically many thousands of times faster than the old one, which will enable more complex problems to be solved. The new algorithm is tested using the same tests performed by Turner and Stone for zeus‐2d , and repeated by Whitehouse and Bate.