The application of the Global Quasi-Linearisation technique to the analysis of the cyclohexane/air mixture autoignition

The paper is focused on the application of the recently developed Global-Quasi-Linearization (GQL) method to a specific problem of the cyclohexane/air autoignition in a rapid compression machine environment. A simplified autoignition mechanism including 50 species has been used in the analysis based on the customised computational fluid dynamics (CFD) package FLUENT and the new GQL method. The results predicted by FLUENT are shown to be very close to the results predicted by the zero dimensional code SPRINT, developed at the University of Leeds. The application of the GQL method shows that further substantial reduction of the mechanism is possible without significant loss of accuracy. The method is shown to be an efficient tool for identification and approximations of low-dimensional invariant system manifolds.