Research on detonation and explosions

爆轰与爆炸研究

• 批准号: 3347-2009
• 负责人: Lee, John
• 金额: $ 3.42万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=419701
• 关键词: Research; detonation; explosions

The proposed research program is a continuation of the research that I have been carrying out under NSERC support since 1965. My interest is primarily concerned with the investigation of the detonation, shock waves and explosion phenomenon. The ultimate goal is to achieve a quantitative description of the complex propagation mechanisms of high speed combustion waves and the non steady propagation of shock waves from chemical explosions. The key problems in detonation research is the understanding of the unstable cellular detonation structure. Once a knowledge of the structure is achieved, empirical correlations and analytical theories can be developed to predict the other dynamic detonation parameters of practical interest (e.g. dependence of velocity on the boundary conditions, detonation limits, critical energy for direct initiation, failure diameter, conditions required for the transition from deflagration to detonation, etc.). Quantitative knowledge of the detonation phenomenon is essential for realistic risk assessment of hazardous facilities, and to the prevention, suppression, and mitigation of accidental explosions in the chemical industries, nuclear reactors, energy transportation and storage facilities. Explosion research also addresses the defense needs of Canada. The investigation of the fundamental mechanisms of detonative combustion also contributes to the understanding and modeling of high speed turbulent reacting flows, an area of fluid mechanics which is currently not well understood.

这项研究计划是我自1965年以来在NSERC支持下进行的研究的延续。我的兴趣主要是关于爆炸、冲击波和爆炸现象的研究。其最终目的是定量描述高速燃烧波和化学爆炸冲击波的复杂传播机理。爆轰研究的关键问题是对不稳定胞格爆轰结构的认识。一旦获得了结构的知识，就可以开发经验相关性和分析理论来预测实际感兴趣的其他动态爆震参数（例如，速度对边界条件的依赖性、爆震极限、直接起爆的临界能量、失效直径、从爆燃到爆震的转变所需的条件等）。爆炸现象的定量知识对于危险设施的现实风险评估以及预防、抑制和减轻化学工业、核反应堆、能源运输和储存设施中的意外爆炸至关重要。爆炸研究也解决了加拿大的国防需求。爆炸燃烧的基本机制的调查也有助于理解和模拟高速湍流反应流，流体力学领域，目前还没有很好地理解。