Journal article

Unsteady flame-wall interaction: Impact on CO emission and wall heat flux

Rahul Palulli, Mohsen Talei, Robert L Gordon

Combustion and Flame | Elsevier | Published : 2019

Abstract

This study investigates the interaction of a two-dimensional (2D) laminar methane-air premixed flame with a constant temperature wall using Direct Numerical Simulation (DNS). The flame is excited using velocity perturbations at the inlet for a range of forcing frequencies. The GRI 3.0 chemical mechanism is used to perform the simulations. The flame behaviour is first analysed by comparing the results to those observed for a steady 2D laminar flame interacting with the wall and a one-dimensional head-on quenching (HOQ) flame under the same conditions as the 2D flame. This is followed by analysing the wall heat flux and CO emission due to the flame quenching at the wall for different forcing f..

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Grants

Awarded by Australian Research Council (ARC)


Funding Acknowledgements

The authors 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 NTMIX-CHEMKIN. In particular, the authors thank Dr. Benedicte Cuenot for her help with this code. This work was supported by the Australian Research Council (ARC) [grant DE180100416] and the University of Melbourne through the Melbourne Research Scholarship. This research was undertaken with the assistance of resources and services from the National Computational Infrastructure (NCI), which is supported by the Australian Government. This work was also supported by resources provided by the Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia.