Volume change and energy exchange: How they affect symmetry in the Noh problem

JOURNAL OF COMPUTATIONAL PHYSICS

卷:364

Article

Vachal, Pavel¹  Wendroff, Burton² 

[1] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Brehova 7, CR-11519 Prague 1, Czech Republic

[2] Los Alamos Natl Lab, Los Alamos, NM USA

关键词: Noh;    Edge viscosity;    Rectangular grid;    Energy exchange;   

DOI  :  10.1016/j.jcp.2018.03.021

来源: Elsevier

【 摘 要 】

The edge viscosity of Caramana, Shashkov and Whalen is known to fail on the Noh problem in an initially rectangular grid. We present a simple change that significantly improves the behavior in that case. We also show that added energy exchange between cells improves the symmetry of both edge viscosity and the tensor viscosity of Campbell and Shashkov. As suggested by Noh, this addition also reduces the wall heating effect. (C) 2018 Elsevier Inc. All rights reserved.

【 授权许可】

Free