A fully automatic procedure for the analytical reduction of chemical kinetics mechanisms for Computational Fluid Dynamics applications. (1st November 2021) - Cazères, Quentin
Highlights: Development of an automatic reduction code called ARCANE. Reduction methods and automated procedure are presented. Methane/air chemistry reduction is performed and compared to literature. Methane/air chemistry with NOx chemistry reduction is performed and analysed. Three-component kerosene/air chemistry reduction is performed and analysed. Butane steam cracking chemistry reduction is performed and analysed. Abstract: A new software called ARCANE has been developed to address the broad need for compact, computationally efficient chemical models for reactive flow simulations. Based on a new, fully automatic and optimised multi-step reduction methodology, ARCANE's purpose is to provide a convenient and more accessible framework for the analysis and reduction of chemical kinetic mechanisms in the general context of combustion chemistry. The capabilities and performance of the methodology are demonstrated through 3 case studies. First, a classical methane/air system with and without nitrogen/oxygen chemistry is studied as a benchmark. The framework is then applied to a kerosene/air mechanism with a multi-component fuel formulation, showing the ability of the fully automatic method to handle complex chemistry. Finally, the generality of the approach is confirmed by developing reduced chemical models for a hydrocarbon steam cracking process.