The University of Southampton
University of Southampton Institutional Repository

Direct numerical simulation of non-premixed syngas burning with detailed chemistry

Direct numerical simulation of non-premixed syngas burning with detailed chemistry
Direct numerical simulation of non-premixed syngas burning with detailed chemistry
Hydrogen/carbon monoxide syngas non-premixed impinging jet flames were studied using three-dimensional direct numerical simulation (DNS) and flamelet generated manifolds (FGMs) based on detailed chemical kinetics. The computational domain employed has a size of 4 jet nozzle diameters in the streamwise direction and 12 jet nozzle diameters in the cross-streamwise direction. The results presented in this study were performed using a uniform Cartesian grid with 200 x 600 x 600 points. The Reynolds number used was Re=2000, based on the reference quantities. The spatial discretisation was carried out using a sixth-order accurate compact finite difference scheme and the discretised equations were time-advanced using a third-order accurate fully explicit compact-storage Runge–Kutta scheme. Results show that the ratio of hydrogen and carbon monoxide in the syngas mixture significantly affects the flame characteristics including the near-wall flame structure. The high diffusivity of hydrogen-rich syngas flame leads to form weaker vortices and a thicker flame. In contrast, carbon monoxide-rich syngas flame leads to form a thinner flame with strong wrinkles. Moreover, the DNS results suggest that the preferential diffusion influences the local flame structure for the simulated low Reynolds number hydrogen flame.
syngas combustion, preferential diffusion, impinging jet, DNS, FGM
343-355
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Jiang, X.
008a11fa-f330-4355-b5c6-2878d1ab0f5c
van Oijen, J.A
57e7e907-4a20-4c77-be43-b3722516ea7f
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Jiang, X.
008a11fa-f330-4355-b5c6-2878d1ab0f5c
van Oijen, J.A
57e7e907-4a20-4c77-be43-b3722516ea7f

Ranga Dinesh, K.K.J., Jiang, X. and van Oijen, J.A (2013) Direct numerical simulation of non-premixed syngas burning with detailed chemistry. Fuel, 107, 343-355. (doi:10.1016/j.fuel.2013.01.014).

Record type: Article

Abstract

Hydrogen/carbon monoxide syngas non-premixed impinging jet flames were studied using three-dimensional direct numerical simulation (DNS) and flamelet generated manifolds (FGMs) based on detailed chemical kinetics. The computational domain employed has a size of 4 jet nozzle diameters in the streamwise direction and 12 jet nozzle diameters in the cross-streamwise direction. The results presented in this study were performed using a uniform Cartesian grid with 200 x 600 x 600 points. The Reynolds number used was Re=2000, based on the reference quantities. The spatial discretisation was carried out using a sixth-order accurate compact finite difference scheme and the discretised equations were time-advanced using a third-order accurate fully explicit compact-storage Runge–Kutta scheme. Results show that the ratio of hydrogen and carbon monoxide in the syngas mixture significantly affects the flame characteristics including the near-wall flame structure. The high diffusivity of hydrogen-rich syngas flame leads to form weaker vortices and a thicker flame. In contrast, carbon monoxide-rich syngas flame leads to form a thinner flame with strong wrinkles. Moreover, the DNS results suggest that the preferential diffusion influences the local flame structure for the simulated low Reynolds number hydrogen flame.

Text
__soton.ac.uk_ude_personalfiles_users_jkk1d12_mydesktop_RANGADINESH_SOTON2013TO2017_JournalPapersforEprints_2013_FUEL_2013.doc - Author's Original
Download (7MB)

More information

e-pub ahead of print date: 29 January 2013
Published date: May 2013
Keywords: syngas combustion, preferential diffusion, impinging jet, DNS, FGM
Organisations: Engineering Science Unit

Identifiers

Local EPrints ID: 354099
URI: http://eprints.soton.ac.uk/id/eprint/354099
PURE UUID: d8fbf9e1-be53-47b2-913e-e94279c92c38
ORCID for K.K.J. Ranga Dinesh: ORCID iD orcid.org/0000-0001-9176-6834

Catalogue record

Date deposited: 01 Jul 2013 10:22
Last modified: 07 Aug 2019 00:33

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×