Research on Detonation and Explosion

爆炸是由爆炸介质中化学反应的快速能量释放所维持的冲击波。这是感兴趣的领域的安全在化学工业中，因为现实的风险评估，由于意外爆炸和爆炸抑制和缓解方法的设计需要一个良好的知识爆炸现象。爆轰研究还有助于理解可压缩化学反应流，这对从事高超声速流和先进推进系统工作的工程师非常重要。爆轰研究的突出问题是缺乏确定爆轰波阵面不稳定结构的能力。这是需要获得一个长度尺度，以表征反应厚度的细胞爆炸。需要爆炸的厚度来确定所有的动态爆炸参数（即，传播速度、起爆能量、爆炸极限等）。由于爆轰波的形成和破坏过程是爆轰波传播机理的重要揭示过程，因此本文的研究重点是爆轰波的形成和破坏过程。爆轰波的传播机制是指爆轰波在爆轰结构中的物理和化学过程，这些过程是爆轰波自维持传播的基础。在爆炸的形成阶段，传播机制正在发展，而在故障期间，基本机制正在被破坏。拟议的工作是感兴趣的爆炸安全工程师和科学家在国防研究机构。NSERC在过去四十年中支持在麦吉尔进行的爆炸研究，为建立加拿大在爆炸和引爆领域的国际公认的专门知识做出了贡献。对拟议方案的持续研究有助于保持这种专门知识。

Detonations are shock waves sustained by rapid energy release from chemical reactions in an explosive medium. It is of interest to the field of safety in the chemical industries since realistic assessment of risks due to accidental explosions and the design of explosion suppression and mitigation methods require a good knowledge of the detonation phenomenon. Detonation research also contributes towards the understanding of compressible chemical reacting flows, which is of importance to engineers working in hypersonic flows and on advanced propulsion systems. The outstanding problem of detonation research is the lack of the ability to determine the unstable structure of the detonation front. This is required to obtain a length scale to characterize the reaction thickness of the cellular detonations. The thickness of the detonation is required for the determination of all the dynamic detonation parameters (i.e., propagation velocity, initiation energy, detonation limits, etc.). The proposed research focuses on the investigation of the formation and failure of the detonation wave for it is during these processes that the essential propagation mechanisms are prominently revealed. The propagation mechanisms refer to the physical and chemical processes within the detonation structure that are responsible for the self-sustained propagation of the detonation wave. During the formation phase of the detonation, the propagation mechanisms are being developed, whereas during failure, the essential mechanisms are being destroyed. The proposed work is of interest to explosion safety engineers and scientists in defense research establishments. NSERC supported research on explosions at McGill over the past four decades has contributed to establishing the internationally acknowledged expertise of Canada in the field of explosion and detonation. The continuing research of the proposed program serves to maintain this expertise.