An extension of high-order shock-fitted detonation propagation in explosives

JOURNAL OF COMPUTATIONAL PHYSICS

卷:395

Article

Romick, Christopher M.¹  Aslam, Tariq D.² 

[1] Eureka Phys LLC, Washington, DC 20006 USA

[2] Los Alamos Natl Lab, Theoret Div, Phys & Chem Mat T1, Los Alamos, NM 87545 USA

关键词: Numerical methods;    Shock-fitting;    Detonation;    High explosives;   

DOI  :  10.1016/j.jcp.2019.06.011

来源: Elsevier

【 摘 要 】

An update to the numerical shock-fitting scheme from [1] is proposed. The updated scheme locally lowers the order of the scheme in the region of secondary non-fitted waves that interact with the fitted front. In addition, it utilizes a non-uniform mapping from the physical space to the computational space along the streamline direction to offer computational savings over the use of an uniform spacing. The utility of the scheme is first demonstrated on planar ideal gas detonating flows. It is then applied to detonation propagation in a two-dimensional axisymmetric geometry while utilizing an Arrhenius Wescott-Stewart-Davis model for PBX 9502. (C) 2019 Elsevier Inc. All rights reserved.

【 授权许可】

Free