Opened 7 years ago

#192 new enhancement

paper on "Broyden's method" for solution of RT

Reported by: Gary J. Ferland Owned by: nobody
Priority: good to do Milestone: Radiative transfer
Component: radiative transfer Version: trunk
Keywords: Cc:

Description

arXiv:1012.3841v1 [astro-ph.IM] 17 Dec 2010

On Broyden’s method for the solution of the multilevel non–LTE radiation transfer problem

This study concerns the fast and accurate solution of multilevel non-LTE radiation transfer problems. We propose and evaluate an alternative iterative scheme to the classical MALI method. Our study is indeed based on the application of Broyden’s method for the solution of nonlinear systems of equations. Comparative tests, in 1D plane-parallel geometry, between the popular MALI method and our alternative method are discussed. The Broyden method is typically 4.5 times faster than MALI. It makes it also fairly competitive with Gauss-Seidel and Successive Over-Relaxation methods developed after MALI. Key


said to be far faster to converge than ALI - look into this method??

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