Novel Computational Approach to Combustion Modelling.

摘要

A novel wavelet adaptive multilevel representation (WAMR) algorithm combined with an extended intrinsic low dimensional manifold (ILDM) approach to solve challenging multiscale problems has been developed. The emphasis of this work was the development of a combined algorithm to rationally reduce to lower dimensions the differential equations that model unsteady, multi-dimensional combustion processes. In particular, there was a focus on problems in which there is full coupling between fluid mechanics and chemical kinetics. Such problems are characterized by a multiplicity of phenomena evolving over length and time scales which are widely disparate. Results are shown for a resolved viscous one-dimensional detonation in hydrogen/oxygen/argon with detailed kinetics. The method has been extended to multiple dimensions, and results are shown for flow in a lid-driven cavity at high Reynolds number.