Wang BB, Jiang Y, Qiu R (2008) Application of CSP to the Reduction of a Complex Combustion Reaction System. Acta Physico-Chimica Sinica 24(12), 2221-2228. [In Chinese]

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Keywords:

Computational singular perturbation, Premixed combustion, Quasi-steady-state assumption, principal component analysis, global reduced mechanisms, heated air, methane, hydrogen, oxidation, ignition, kinetics

Abstract: 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-steady-state (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.