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Numerical investigations of a hydrogen impinging flame with different finite-rate chemical kinetic mechanisms

Research output: Contribution to journalJournal article

Published

Associated organisation

Journal publication date07/2013
JournalFuel
Volume109
Number of pages12
Pages285-296
Early online date20/12/12
Original languageEnglish

Abstract

Large-eddy simulations (LES) of non-premixed hydrogen impinging flames using different chemical kinetics have been performed in this study. The work is mainly focused on the formation of vortical structures in the primary and wall jets, along with the analysis of heat transfer. The configuration corresponds to a laboratory hydrogen jet flame issuing from a circular nozzle which impinges on a downstream wall with a nozzle to plate distance of H/D = 20. The numerical simulations were performed using the same subgrid scale model but different finite-rate chemical kinetic mechanisms. The results show appreciable differences in the predictions of vortex formation and near-wall heat transfer due to the influence of the chemical reactions on the flow field.