A One-Dimensional Discrete Boltzmann Model for Detonation and an Abnormal Detonation Phenomenon

被引：0
|
作者：
张玉东 [1 ,2 ]
许爱国 [2 ,3 ]
张广财 [2 ]
陈志华 [1 ]
机构：
[1] Key Laboratory of Transient Physics, Nanjing University of Science and Technology
[2] Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics
[3] Center for Applied Physics and Technology, MOE Key Center for High Energy Density Physics Simulations, College of Engineering, Peking University
来源：
Communications in Theoretical Physics | 2019年 / 71卷 / 01期
基金：
中国国家自然科学基金;
关键词：
detonation; discrete Boltzmann model; negative temperature coefficient; abnormal detonation;
D O I：
暂无
中图分类号：
O381 [爆震（爆轰）理论];
学科分类号：
08 ; 0801 ;
摘要：
A one-dimensional discrete Boltzmann model for detonation simulation is presented. Instead of numerical solving Navier-Stokes equations, this model obtains the information of flow field through numerical solving specially discretized Boltzmann equation. Several classical benchmarks including Sod shock wave tube, Colella explosion problem,and one-dimensional self-sustainable stable detonation are simulated to validate the new model. Based on the new model,the influence of negative temperature coefficient of reaction rate on detonation is further investigated. It is found that an abnormal detonation with two wave heads periodically appears under negative temperature coefficient condition.The causes of the abnormal detonation are analyzed. One typical cycle of the periodic abnormal detonation and its development process are discussed.
引用
收藏
页码：117 / 126
页数：10
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