Kershaw closures for linear transport equations in slab geometry I: Model derivation

JOURNAL OF COMPUTATIONAL PHYSICS

卷:322

Article; Proceedings Paper

Schneider, Florian¹ 

[1] TU Kaiserslautern, Fachbereich Math, Erwin Schrodinger Str, D-67663 Kaiserslautern, Germany

关键词: Moment models;    Minimum entropy;    Kershaw closures;    Kinetic transport equation;   

DOI  :  10.1016/j.jcp.2016.02.080

来源: Elsevier

【 摘 要 】

This paper provides a new class of moment models for linear kinetic equations in slab geometry. These models can be evaluated cheaply while preserving the important realizability property, that is the fact that the underlying closure is non-negative. Several comparisons with the (expensive) state-of-the-art minimum-entropy models are made, showing the similarity in approximation quality of the two classes. (C) 2016 Elsevier Inc. All rights reserved.

【 授权许可】

Free