REDIM reduced modeling of flame-wall-interactions: Quenching of a premixed methane/air flame at a cold inert wall

• Published in: Proceedings of the Combustion Institute Vol. 36; no. 1; pp. 655 - 661
• Main Authors: Steinhilber, Gerd, Bykov, Viatcheslav, Maas, Ulrich
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 2017
• Subjects: Flame quenching; Flame-wall interaction; Heat loss; Model reduction; REDIM; Heat loss; Model reduction; Flame quenching; REDIM; Flame-wall interaction
• ISSN: 1540-7489; 1873-2704
• DOI: 10.1016/j.proci.2016.08.057

The focus of this study is the development of a robust and accurate algorithm for model reduction of chemical kinetics for near wall reacting flows. The so-called Reaction-Diffusion Manifold (REDIM) method is employed for this purpose. The problem statement represents a fundamental difficulty for manifolds based model reduction concepts, since it is necessary to account for flame-wall interactions that perturb the system states by heat loss and catalytic reactions. Omitting the latter still leaves the task to find a reduced description, that is valid not only for flames experiencing heat loss in a stationary burning regime, but also in a transient regime, where flame quenching occurs. It is shown that the REDIM method is capable to account for these processes. The application of the approach is illustrated by the methane/air combustion system in a simple geometry with a cold inert wall, but with a detailed chemical reaction mechanism.