The impact of chemical modelling on turbulent premixed flame acoustics

D Brouzet; M Talei; MJ Brear; B Cuenot

Journal article

The impact of chemical modelling on turbulent premixed flame acoustics

D Brouzet, M Talei, MJ Brear, B Cuenot

Journal of Fluid Mechanics | CAMBRIDGE UNIV PRESS | Published : 2021

DOI: 10.1017/jfm.2020.1184

Abstract

Direct numerical simulations are used to study the impact of chemical modelling on the flame dynamics and the sound generated by three-dimensional, turbulent, premixed methane/air jet flames. The semi-global BFER mechanism from Franzelli et al. (Combust. Flame, vol. 159, issue 2, 2012, pp. 621-637) and the more complex skeletal COFFEE mechanism from Coffee (Combust. Flame, vol. 55, issue 2, 1984, pp. 161-170) are considered. A more wrinkled flame is observed at downstream locations when using the COFFEE mechanism, demonstrating stronger flame/turbulence interaction. This flame also has a significantly lower acoustic power even though it features more acoustic output at high frequencies. The ..

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University of Melbourne Researchers

Mohsen Talei Author

Michael Brear Author

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Grants

Awarded by National Computational Infrastructure

Funding Acknowledgements

This work was supported by the Australian Research Council (ARC) [DE180100416] and the University of Melbourne through a Melbourne International Research Scholarship and a Melbourne International Fee Remission Scholarship. The research benefited from computational resources provided through the National Computational Merit Allocation Scheme and the Pawsey Energy and Resources Scheme, supported by the Australian Government. The computational facilities supporting this project included the Australian NCI National Facility and the Pawsey Supercomputing Centre.