Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/103833
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Laminar flame calculations for analyzing trends in autoignitive jet flames in a hot and vitiated coflow
Author: Medwell, P.
Evans, M.
Chan, Q.
Katta, V.
Citation: Energy and Fuels, 2016; 30(10):8680-8690
Publisher: American Chemical Society
Issue Date: 2016
ISSN: 0887-0624
1520-5029
Statement of
Responsibility: 
Paul R. Medwell, Michael J. Evans, Qing N. Chan and Viswanath R. Katta
Abstract: Experiments of autoignitive jet flames in a hot and vitiated coflow have previously shown various flame behaviors, spanning lifted flames to moderate or intense low oxygen dilution (MILD) combustion. For better understanding the behavior of flames in this configuration, regime diagrams and ignition delay results are presented from well-stirred reactor calculations across a wide range of operating conditions for methane and ethylene fuels. In conjunction with two-dimensional calculations, the importance of flame precursors and oxygen penetration across the reaction zone is revealed. It is found that widely accepted definitions and regime diagrams are inadequate to classify and reconcile the different flame behaviors that are observed experimentally. For accurate prediction of the ignition process, it is necessary to incorporate boundary conditions that capture minor species in the oxidizer. The role of fuel type also has a major impact on the ignition process and flame appearance.
Keywords: Turbulent lifted flames; direct numerical-simulation; methane mild combustion; large-eddy simulation; finite-rate chemistry; well stirred reactor; ignition HDDI regime; highly-heated coflow; non-premixed flames; auto-ignition
Rights: © 2016 American Chemical Society
RMID: 0030057350
DOI: 10.1021/acs.energyfuels.6b01264
Published version: http://pubs.acs.org/doi/abs/10.1021/acs.energyfuels.6b01264
Appears in Collections:Mechanical Engineering publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.