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Hot Surface Ignition of n-Hexane Mixtures Using Simplified Kinetics

Melguizo-Gavilanes, Josué and Nové-Josserand, Augustin and Coronel, Stephanie A. and Mével, Rémy and Shepherd, Joseph E. (2016) Hot Surface Ignition of n-Hexane Mixtures Using Simplified Kinetics. Combustion Science and Technology, 188 (11-12). pp. 2060-2076. ISSN 0010-2202. https://resolver.caltech.edu/CaltechAUTHORS:20161107-081240457

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Abstract

Hot surface ignition is relevant in the context of industrial safety. In the present work, two-dimensional simulations using simplified kinetics of the buoyancy-driven flow and ignition of a slightly lean n-hexane–air mixture by a rapidly heated surface (glowplug) are reported. Experimentally, ignition is most often observed to occur at the top of the glowplug; numerical results reproduce this trend and shed light on this behavior. The numerical predictions of the flow field and hot surface temperature at ignition are in quantitative agreement with experiments. The simulations suggest that flow separation plays a crucial role in creating zones where convective losses are minimized and heat diffusion is maximized, resulting in the critical conditions for ignition to take place.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1080/00102202.2016.1212577DOIArticle
ORCID:
AuthorORCID
Melguizo-Gavilanes, Josué0000-0001-5174-6003
Coronel, Stephanie A.0000-0002-7088-7976
Mével, Rémy0000-0002-0032-350X
Shepherd, Joseph E.0000-0003-3181-9310
Additional Information:© 2016 Informa Group plc. Received 04 Nov 2015, Accepted 01 May 2016, Published online: 28 Oct 2016. This work was carried out in the Explosion Dynamics Laboratory of the California Institute of Technology. J. Melguizo-Gavilanes was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) Postdoctoral Fellowship Program. S. Coronel, R. Mével and A. Nové-Josserand by The Boeing Company through a Strategic Research and Development Relationship Agreement CT-BA-GTA-1. Special thanks to Dr. Lorenz Boeck and Andreas Kink for their help with the experimental setup and improving the quality of the diagnostics. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number ACI-1053575.
Group:GALCIT
Funders:
Funding AgencyGrant Number
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Boeing Company Strategic Research and Development RelationshipCT-BA-GTA-1
NSFACI-1053575
Subject Keywords:n-Hexane, Hot surface ignition, Industrial safety, Simplified kinetics
Issue or Number:11-12
Record Number:CaltechAUTHORS:20161107-081240457
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20161107-081240457
Official Citation:Josué Melguizo-Gavilanes, Augustin Nové-Josserand, Stephanie Coronel, Rémy Mével & Joseph E. Shepherd (2016) Hot Surface Ignition of n-Hexane Mixtures Using Simplified Kinetics, Combustion Science and Technology, 188:11-12, 2060-2076, DOI: 10.1080/00102202.2016.1212577
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71754
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:07 Nov 2016 20:15
Last Modified:25 Aug 2020 17:52

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