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Flame dynamics of swirling nonpremixed hydrogen-carbon monoxide syngas flames

Flame dynamics of swirling nonpremixed hydrogen-carbon monoxide syngas flames
Flame dynamics of swirling nonpremixed hydrogen-carbon monoxide syngas flames
Flame characteristics of swirling non-premixed H2/CO syngas fuel mixtures have been simulated using large eddy simulation and detailed chemistry. The selected combustor configuration is the TECFLAM burner which has been used for extensive experimental investigations for natural gas combustion. The large eddy simulation (LES) solves the governing equations on a structured Cartesian grid using a finite volume method, with turbulence and combustion modelling based on the localised dynamic Smagorinsky model and the steady laminar flamelet model, respectively. The predictions for H2-rich and CO-rich flames show considerable differences between them for velocity and scalar fields and this demonstrates the effects of fuel variability on the flame characteristics in swirling environment. In general, the higher diffusivity of hydrogen in H2-rich fuel is largely responsible for forming a much thicker flame with a larger vortex breakdown bubble (VBB) in a swirling flame compared to the H2-lean and CO-rich syngas flames.
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Luo, K.H.
1c9be6c6-e956-4b12-af13-32ea855c69f3
Kirkpatrick, M.P
fdf5fc3f-893c-4ae2-879f-58ee0e8f20d4
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Luo, K.H.
1c9be6c6-e956-4b12-af13-32ea855c69f3
Kirkpatrick, M.P
fdf5fc3f-893c-4ae2-879f-58ee0e8f20d4

Ranga Dinesh, K.K.J., Luo, K.H. and Kirkpatrick, M.P (2013) Flame dynamics of swirling nonpremixed hydrogen-carbon monoxide syngas flames. 6th European Combustion Meeting (ECM 2013), Lund, Sweden. 24 - 27 Jun 2013. 6 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Flame characteristics of swirling non-premixed H2/CO syngas fuel mixtures have been simulated using large eddy simulation and detailed chemistry. The selected combustor configuration is the TECFLAM burner which has been used for extensive experimental investigations for natural gas combustion. The large eddy simulation (LES) solves the governing equations on a structured Cartesian grid using a finite volume method, with turbulence and combustion modelling based on the localised dynamic Smagorinsky model and the steady laminar flamelet model, respectively. The predictions for H2-rich and CO-rich flames show considerable differences between them for velocity and scalar fields and this demonstrates the effects of fuel variability on the flame characteristics in swirling environment. In general, the higher diffusivity of hydrogen in H2-rich fuel is largely responsible for forming a much thicker flame with a larger vortex breakdown bubble (VBB) in a swirling flame compared to the H2-lean and CO-rich syngas flames.

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Published date: 25 June 2013
Venue - Dates: 6th European Combustion Meeting (ECM 2013), Lund, Sweden, 2013-06-24 - 2013-06-27
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 369786
URI: http://eprints.soton.ac.uk/id/eprint/369786
PURE UUID: 465aafe1-ebeb-451e-8059-2c8d4c8edd2b
ORCID for K.K.J. Ranga Dinesh: ORCID iD orcid.org/0000-0001-9176-6834

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Date deposited: 07 Oct 2014 14:33
Last modified: 11 Jul 2020 00:34

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Contributors

Author: K.H. Luo
Author: M.P Kirkpatrick

University divisions

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