Implicit Solution of Large-Scale Radiation Diffusion Problems.

Brown, P. N. ; Graziani, F. ; Otero, I. ; Woodward, C. S.

Technical Information Center Oak Ridge Tennessee

关键词: Nonlinear radiation diffusion;    Fully implicit;    Large-scale;    Accuracy;    Diffusion;   

RP-ID  :  DE200415006869

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

In this paper, we present an efficient solution approach for fully implicit, large-scale, nonlinear radiation diffusion problems. The fully implicit approach is compared to a semi-implicit solution method. Accuracy and efficiency are shown to be better for the fully implicit method on both one- and three-dimensional problems with tabular opacities taken from the LEOS opacity library.