A SPH Implementation with Ignition and Growth and Afterburning Models for Aluminized Explosives

被引：9

作者：

Wang, Guangyu ^{[1
]}

Liu, Guirong ^{[1
]}

Peng, Qing ^{[2
]}

De, Suvranu ^{[2
]}

机构：

[1] Univ Cincinnati, Dept Aerosp Engn & Engn Mech, Cincinnati, OH 45221 USA

[2] Rensselaer Polytech Inst Troy, Dept Mech Aerosp & Nucl Engn, Troy, NY 12180 USA

来源：

INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS | 2017年 / 14卷 / 04期

关键词：

Aluminized explosives; smooth particle hydrodynamics; ignition and growth model; afterburning model; numerical modeling of detonation; SMOOTHED PARTICLE HYDRODYNAMICS; SHOCK INITIATION; DETONATION; SIMULATION;

D O I：

10.1142/S0219876217500463

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Aluminized explosives have been applied in military industry since decades ago. Compared with ideal explosives such as TNT, HMX, RDX, aluminized explosives feature both fast detonation and slow metal combustion chemistry, generating a complex multi-phase reactive flow. Though aluminized explosives have been employed for a long time, the mechanism underneath the chemical process is still not thoroughly understood. In this paper, a smooth particle hydrodynamics (SPH) method incorporated ignition and growth model, and afterburning model has been proposed for the simulation of aluminized explosive. Ignition and growth model is currently the most popular model for the simulation of high explosives, which is capable of accurately reproducing arrival time of detonation front and pressure history of high explosives. It has been integrated in commercial software such as ANSYS-LS DYNA. In addition, an afterburning model has been integrated in the SPH code to simulate the combustion of aluminum particles. Simulation is compared with experiment and good agreement is observed. The proposed mathematical model can be used to study the detonation of aluminized explosives.

引用

页数：15

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