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Burning syngas in a high swirl burner: effects of fuel composition

Burning syngas in a high swirl burner: effects of fuel composition
Burning syngas in a high swirl burner: effects of fuel composition
Flame characteristics of swirling non-premixed hydrogen-carbon monoxide 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 hydrogen-rich and carbon monoxide-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 hydrogen-rich fuel is largely responsible for forming a much thicker flame with a larger vortex breakdown bubble (VBB) in a swirling flame compare to the hydrogen-lean but carbon dioxide-rich syngas flames.
hydrogen, syngas, swirl, vortex breakdown, combustion, les
0360-3199
9028-9042
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Luo, Kai H.
86f52a13-fdcd-40e4-8344-a6fe47c4e16b
Kirkpatrick, M.P.
cf76adda-898f-472d-a93a-c55d29b06fba
Malalasekera, W.
d3bc4153-1af3-41ab-9e42-4aa0d7cbaec7
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Luo, Kai H.
86f52a13-fdcd-40e4-8344-a6fe47c4e16b
Kirkpatrick, M.P.
cf76adda-898f-472d-a93a-c55d29b06fba
Malalasekera, W.
d3bc4153-1af3-41ab-9e42-4aa0d7cbaec7

Ranga Dinesh, K.K.J., Luo, Kai H., Kirkpatrick, M.P. and Malalasekera, W. (2013) Burning syngas in a high swirl burner: effects of fuel composition. International Journal of Hydrogen Energy, 38 (21), 9028-9042. (doi:10.1016/j.ijhydene.2013.05.021).

Record type: Article

Abstract

Flame characteristics of swirling non-premixed hydrogen-carbon monoxide 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 hydrogen-rich and carbon monoxide-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 hydrogen-rich fuel is largely responsible for forming a much thicker flame with a larger vortex breakdown bubble (VBB) in a swirling flame compare to the hydrogen-lean but carbon dioxide-rich syngas flames.

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More information

Published date: July 2013
Keywords: hydrogen, syngas, swirl, vortex breakdown, combustion, les
Organisations: Engineering Science Unit

Identifiers

Local EPrints ID: 354100
URI: http://eprints.soton.ac.uk/id/eprint/354100
ISSN: 0360-3199
PURE UUID: d54f80be-85ec-4adb-ab7e-a8d410458db5
ORCID for K.K.J. Ranga Dinesh: ORCID iD orcid.org/0000-0001-9176-6834

Catalogue record

Date deposited: 01 Jul 2013 10:12
Last modified: 26 Nov 2019 01:35

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