Development of Node-centered finite-volume diffusion method on triangle mesh for detonation propagation simulation in insensitive high explosives

IF 5.8 2区工程技术 Q2 ENERGY & FUELS

Combustion and Flame Pub Date : 2024-06-01 DOI:10.1016/j.combustflame.2024.113535

Shuqi Yang , Wenyang Peng , Kang Zhao , Lang Chen , Xu Zhang , Liuwei Guo

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引用次数: 0

Abstract

This study presents a numerical simulation of detonation waves in insensitive high explosives (IHE). A direct numerical simulation (DNS) method of detonation waves propagation was developed. It solves two-dimensional reactive Euler equations by using a semi-discrete node-centered finite-volume (NCFV) scheme on triangle mesh. Employing ZND model analytical solution as the initial condition, the upper and lower boundary conditions were designed as local sonic equilibrium conditions. The DNS method was validated using steady detonation wave propagation experimental results for tri-amino-tri-nitro-benzene (TATB) based explosives. The two-dimensional steady detonation propagation of the circular arc experiments was completed using a non-embedded technique (electric and optical fibre probe velocimetry). The comparison results demonstrate that the numerical method can provide a good prediction of the pseudo-steady-state detonation wave front propagation and the angular speed.

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开发用于不敏感高能炸药爆炸传播模拟的三角形网格节点中心有限体积扩散方法

本研究介绍了不敏感烈性炸药（IHE）引爆波的数值模拟。研究开发了一种直接数值模拟（DNS）引爆波传播的方法。它在三角形网格上使用半离散节点中心有限体积（NCFV）方案求解二维反应欧拉方程。采用 ZND 模型分析解作为初始条件，上下边界条件设计为局部声波平衡条件。利用基于三氨基三硝基苯（TATB）炸药的稳定爆轰波传播实验结果对 DNS 方法进行了验证。圆弧实验的二维稳定爆轰传播是使用非嵌入式技术（电和光纤探针测速）完成的。对比结果表明，数值方法可以很好地预测伪稳态起爆波前传播和角速度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Combustion and Flame 工程技术-工程：化工

CiteScore

9.50

自引率

20.50%

发文量

631

审稿时长

3.8 months

期刊介绍： The mission of the journal is to publish high quality work from experimental, theoretical, and computational investigations on the fundamentals of combustion phenomena and closely allied matters. While submissions in all pertinent areas are welcomed, past and recent focus of the journal has been on: Development and validation of reaction kinetics, reduction of reaction mechanisms and modeling of combustion systems, including: Conventional, alternative and surrogate fuels; Pollutants; Particulate and aerosol formation and abatement; Heterogeneous processes. Experimental, theoretical, and computational studies of laminar and turbulent combustion phenomena, including: Premixed and non-premixed flames; Ignition and extinction phenomena; Flame propagation; Flame structure; Instabilities and swirl; Flame spread; Multi-phase reactants. Advances in diagnostic and computational methods in combustion, including: Measurement and simulation of scalar and vector properties; Novel techniques; State-of-the art applications. Fundamental investigations of combustion technologies and systems, including: Internal combustion engines; Gas turbines; Small- and large-scale stationary combustion and power generation; Catalytic combustion; Combustion synthesis; Combustion under extreme conditions; New concepts.