Journal article
Reduced chemistry for sound generation by planar annihilation in premixed methane/hydrogen flames
Jen Zen Ho, Mohsen Talei, Robert L Gordon, Michael J Brear
Proceedings of the Combustion Institute | Elsevier BV | Published : 2020
Abstract
Sound generation by planar flame annihilation for methane/hydrogen/air premixed flames is investigated using one-dimensional (1D) fully-resolved simulations. The Foundational Fuel Chemistry Model (FFCM) is used to undertake the simulations for different initial pressures and temperatures, for volumetric mixtures of 0 to 100% hydrogen in the fuel mixture. For cases with 25% to 80% of hydrogen in the fuel mixture three stages of annihilation are observed. The first stage exhibits a gradual flame extinction coupled with the generation of a pressure wave with a long wavelength. The second stage features a more rapid extinction as the flame accelerates towards the symmetry axis, producing a sharp..
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Awarded by Australian Research Council
Funding Acknowledgements
This work is funded by the Future Fuels CRC, supported through the Australian Governments Cooperative Research Centres Program. The cash and inkind support from the industry participants is gratefully acknowledged. Mohsen Talei acknowledges the support of the Australian Research Council through the DECRA Fellowship (DE180100416) . The authors also acknowledge the generous support of the European Centre for Research and Advanced Training in Scientific Computation (CERFACS, http:// www.cerfacs.fr) , in providing the authors with the source code for NTMIXCHEMKIN. In particular, the authors thank Dr. Benedicte Cuenot for her help with this code. This research was undertaken with the assistance of resources and services from the National Computational Infrastructure (NCI) , the Pawsey Supercomputing Centre, with funding from the Australian Government and the Government of Western Australia.