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Effect of N-2/CO2 dilution on laminar burning velocity of H-2-air mixtures at high temperatures

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Title Effect of N-2/CO2 dilution on laminar burning velocity of H-2-air mixtures at high temperatures
 
Creator PAIDI, SK
BHAVARAJU, A
AKRAM, M
KUMAR, S
 
Subject Laminar burning velocity
Flame stabilization
Diverging channels
Diluted hydrogen flames
FLAME CHARACTERISTICS
PREMIXED FLAMES
HYDROGEN-AIR
HYDROCARBON
PRESSURE
 
Description The laminar burning velocities of H-2-air mixtures diluted with N-2 or CO2 gas at high temperatures were obtained from planar flames observed in externally heated diverging channels. Experiments were conducted for an equivalence ratio range of 0.8-1.3 and temperature range of 350-600 K with various dilution rates. In addition, computational predictions for burning velocities and their comparison with experimental results and detailed flame structures have been presented. Sensitivity analysis was carried out to identify important reactions and their contribution to the laminar burning velocity. The computational predictions are in reasonably good agreement with the present experimental data (especially for N-2 dilution case). The burning velocity maxima was observed for slightly rich mixtures and this maxima was found to shift to higher equivalence ratios (0) with a decrease in the dilution. The effect of CO2 dilution was more profound than N-2 dilution in reducing the burning velocity of mixtures at higher temperatures. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2014-10-15T13:53:31Z
2014-10-15T13:53:31Z
2013
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 38(31)13812-13821
0360-3199
1879-3487
http://dx.doi.org/10.1016/j.ijhydene.2013.08.024
http://dspace.library.iitb.ac.in/jspui/handle/100/15035
 
Language en