The University of Southampton
University of Southampton Institutional Repository

Spark ignition of turbulent recirculating non-premixed gas and spray flames: a model for predicting ignition probability

Record type: Article

A model that synthesizes previous knowledge from experiments and simulations on spark ignition of gas and liquid-fuelled non-premixed recirculating flames has been developed. Attention is focused on the flame expansion process and the overall filling of the combustor volume with flame. The model is meant to provide a quick assessment of the ignition behaviour of a combustor. It uses information from the flow patterns before ignition and calculates possible trajectories that a flame emanating from a spark may experience. The calculation of these trajectories includes flame extinction to capture the experimentally- observed flame quenching, mixture fraction fluctuations to capture the non-premixed nature of the flame, convection by the mean and the random turbulent flow to capture the probabilistic nature of the flame evolution, and uses recent results on the laminar burning velocity in sprays. The model is applied to gas and spray flames and the calculated ignition probability distributions and the timescale of complete ignition agree reasonably well with experiment. The results of the model provide insights into spark ignition processes in complicated flow patterns.

PDF Neophytou_CnF_2012.pdf - Other
Restricted to Repository staff only
Download (7MB)

Citation

Neophytou, A., Richardson, E.S. and Mastorakos, E. (2012) Spark ignition of turbulent recirculating non-premixed gas and spray flames: a model for predicting ignition probability Combustion and Flame, 159, (4), pp. 1503-1522. (doi:10.1016/j.combustflame.2011.12.015).

More information

Published date: April 2012
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 333624
URI: http://eprints.soton.ac.uk/id/eprint/333624
ISSN: 0010-2180
PURE UUID: e5cd3b98-b32f-406d-9eb7-a2bebde78b54

Catalogue record

Date deposited: 06 Mar 2012 13:51
Last modified: 18 Jul 2017 06:12

Export record

Altmetrics

Contributors

Author: A. Neophytou
Author: E.S. Richardson
Author: E. Mastorakos

University divisions


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.

×