Bradley, D., Palacios, A. and Hu, L. (Cover date: December 2023) Blow-off of Fuel Jet Flames in the Atmosphere. Fire Safety Journal, 141. 104007. ISSN 0379-7112
Abstract
Further data from experiments with the atmospheric burning of jet fuels, particularly their blow-off and flame quenching characteristics, have been collected and interpreted. These are characterised in terms of both their dimensionless Flow Number and Flame Thickness. Regimes of Lifted Flames, Flame Blow-off, Choked Flow and Flame Quench have been defined by these Dimensionless Groups. New data are presented for a variety of hydrocarbon and ammonia-hydrogen fuels. New techniques are required for the assessment of the latter, including derivation of their acoustic velocities and the characterisation of their laminar flames, including burning velocity and flame thickness. It is possible to create NH3+H2 jet flow blends with burning rates and blow-off velocities that are closer to those of hydrocarbons than of H2. The properties of individual fuels are displayed in terms of the fuel velocities at which blow-off occurs for different pipe diameters. The properties of individual fuels displayed in this way show a greater diversity than is evident from the dimensionless groups. Similarities are drawn between premixed and jet flow flame quenching.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | ©2023, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. This is an author produced version of an article published in the Fire Safety Journal. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Jet flames, Blow-off, NH3+H2 blends, Hydrocarbons, flame quenching |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Nov 2023 11:42 |
Last Modified: | 06 Oct 2024 00:13 |
Published Version: | https://www.sciencedirect.com/science/article/pii/... |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.firesaf.2023.104007 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:205306 |