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中文摘要：
基于计算奇异摄动（CSP）思想，对甲烷／空气预混燃烧系统进行分析．CSP将反应空间分裂，消除刚性；将单点分析和全局分析相结合，合理选择主要组分和稳态物质，使用CSP的特征指数简化方程．构建了针对甲烷／空气预混燃烧系统的总包15步反应机理，并利用Sandia实验室的PREMIX软件包对该系统进行分析，验证了简化机理的准确性，证实了CSP分析方法在燃烧系统中应用的可靠性和优越性，并为研究简化燃烧系统的分析提供了一种新的思路．
英文摘要：
A numerical study based on computational singular perturbation （CSP） in a methane/air premixed combustion system was undertaken. This method splits reaction spaces to eliminate stiffness, identifies quasi-steadystate （QSS） species by analyzing CSP pointer locally and integrally as well as simplifying algebraic relations and differential equations by using two CSP indexes. Finally, a 15-step globally reduced mechanism was constructed based on CSP analyses in a premixed methane/air combustion system. The 15-step reduced mechanism was tested and verified using Sandia＇s PREMIX. Advantages of the CSP method are discussed. A new method for analyzing the reduced mechanism may be used for more complex combustion systems.
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