Comparison of Acceleration Methods in a Radiation Transport Code With Adaptive Mesh Refinement

Author

García-Fernández, Carlos ; Velarde, Pedro ; Cotelo, Manuel

Author_Institution

Inst. de Fusion Nucl., Univ. Politec. de Madrid, Madrid, Spain

Volume

38

Issue

9

fYear

2010

Firstpage

2359

Lastpage

2366

Abstract

New considerations about the acceleration of an iterative process to couple the radiation transport equation and the equation of matter temperature are presented in this paper. Two synthetic acceleration methods [diffusion synthetic acceleration (DSA) and transport synthetic acceleration (TSA)] have been studied and analyzed, showing its strengths and weaknesses. This study is applied to an adaptive mesh refinement (AMR) context, concluding in a better performance of DSA for coarse level resolutions with higher Sn, while TSA is better for finer level boxes and smaller Sn cases. These conclusions are applied to accelerate the resolution of an AMR problem.

Keywords

convergence of numerical methods; iterative methods; mesh generation; plasma theory; plasma transport processes; radiation; adaptive mesh refinement context; coarse level resolutions; diffusion synthetic acceleration; finer level boxes; iterative process; matter temperature equation; radiation transport code; radiation transport equation; synthetic acceleration methods; transport synthetic acceleration; Acceleration; Adaptive mesh refinement; Hydrodynamics; Integral equations; Plasma accelerators; Plasma simulation; Plasma temperature; Plasma transport processes; Solids; Tin; Adaptive mesh refinement (AMR); diffusion synthetic acceleration (DSA); radiation transport; synthetic acceleration; transport synthetic acceleration (TSA);

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2010.2052109

Filename

5510170