Theory of Combustion by Analytical Methods for Real Chemistry

真实化学分析方法的燃烧理论

• 批准号: 0129562
• 负责人: Forman Williams
• 金额: $ 24万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-04-01 至 2005-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0129562&HistoricalAwards=false
• 关键词: Theory; Combustion; Analytical; Methods; Real

The structure and stability of combustion processes in real mixtures is analyzed using mathematical methods for partial differential equations. Diffusion flames, premixed flames, and detonations are addressed. Through nondimensionalization of the conservation equations, appropriate parameters are identified, typically activation energies or ratios of reaction rates. Asymptotic analysis identifies limiting values and simplifies the conservation equations, enabling solution analytically without resort to numerical integration. Formulas are derived for quantities of interest such as burning velocities, ignition or extinction strain rates, autoignition delay times, and critical conditions for stability. Systems addressed include combustion of higher hydrocarbons and higher alcohols including production of nitrogen oxides, intrinsic detonation stability, and influences of strain on flames. Reduced kinetic schemes are derived and their influences on flame and detonation behaviors are analyzed.

使用偏微分方程的数学方法分析了实际混合物中燃烧过程的结构和稳定性。 讨论了扩散火焰、预混合火焰和爆炸。通过守恒方程的无量纲化，可以确定适当的参数，通常是活化能或反应速率比。 渐近分析确定极限值并简化守恒方程，从而无需借助数值积分即可进行分析求解。 推导出感兴趣的量的公式，例如燃烧速度、点火或熄灭应变率、自燃延迟时间和稳定性的临界条件。 所涉及的系统包括高级烃和高级醇的燃烧，包括氮氧化物的产生、固有爆炸稳定性以及火焰应变的影响。 推导了简化的动力学方案，并分析了它们对火焰和爆炸行为的影响。