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

Journal Article · Fri Jun 07 00:00:00 EDT 2019 · Journal of Computational Physics

DOI:https://doi.org/10.1016/j.jcp.2019.06.011· OSTI ID:1526959

Romick, Christopher M. ^[1]; Aslam, Tariq Dennis  ^[2]

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1. Eureka Physics, LLC, Washington, DC (United States)
2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

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.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: 89233218CNA000001
• OSTI ID: 1526959
• Alternate ID(s): OSTI ID: 1545920
• Report Number(s): LA-UR-18-31071
• Journal Information: Journal of Computational Physics, Vol. 395; ISSN 0021-9991
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS