A comparison of explosively driven shock wave radius versus time scaling approaches

IF 1.7 4区 工程技术 Q3 MECHANICS
M. J. Hargather, K. O. Winter, J. Kimberley, T. Wei
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引用次数: 0

Abstract

Explosively driven shock wave radius versus time profiles are frequently used to document energy release and relative explosive performance. Recently, two universal shock wave radius versus time profiles have been presented in the literature, which demonstrate the ability to represent explosively driven shock wave profiles for all explosive sources in any fluid environment. These two universal shock wave profiles are examined here relative to each other and relative to a commonly used nonlinear shock wave profile, which is fit to experimental data for individual explosive materials. The nonlinear profile, originally developed by Dewey, is examined here, and a universal non-dimensional form of the equation is proposed. The universal shock wave profiles are all found to be relatively similar, but with slight variations in a transition region of non-dimensional radii \(0.15\lesssim R^*\lesssim 2\). The variations in this region result in different estimations of energy release or blast strength between the curve fits.

Abstract Image

爆炸驱动冲击波半径与时间标度方法的比较
爆炸驱动的冲击波半径与时间曲线经常用于记录能量释放和相对爆炸性能。最近,在文献中提出了两种通用的冲击波半径与时间曲线,它们证明了在任何流体环境中,对于所有爆炸源,能够表示爆炸驱动的冲击波曲线。本文对这两种通用激波剖面进行了相互比较和相对于一种常用的非线性激波剖面的检验,这种非线性激波剖面适合于个别炸药的实验数据。本文考察了杜威最初提出的非线性轮廓,并提出了一种通用的无量纲形式的方程。普遍的激波剖面都是相对相似的,但在一个无量纲半径\(0.15\lesssim R^*\lesssim 2\)的过渡区域有轻微的变化。该区域的变化导致曲线拟合之间能量释放或爆炸强度的不同估计。
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来源期刊
Shock Waves
Shock Waves 物理-力学
CiteScore
4.10
自引率
9.10%
发文量
41
审稿时长
17.4 months
期刊介绍: Shock Waves provides a forum for presenting and discussing new results in all fields where shock and detonation phenomena play a role. The journal addresses physicists, engineers and applied mathematicians working on theoretical, experimental or numerical issues, including diagnostics and flow visualization. The research fields considered include, but are not limited to, aero- and gas dynamics, acoustics, physical chemistry, condensed matter and plasmas, with applications encompassing materials sciences, space sciences, geosciences, life sciences and medicine. Of particular interest are contributions which provide insights into fundamental aspects of the techniques that are relevant to more than one specific research community. The journal publishes scholarly research papers, invited review articles and short notes, as well as comments on papers already published in this journal. Occasionally concise meeting reports of interest to the Shock Waves community are published.
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