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Title: PAH formation in counterflow non-premixed flames of butane and butanol isomers

Authors:
; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1334830
Grant/Contract Number:
SC0001198
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Combustion and Flame
Additional Journal Information:
Journal Volume: 170; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-04 15:01:41; Journal ID: ISSN 0010-2180
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

Citation Formats

Singh, Pradeep, and Sung, Chih-Jen. PAH formation in counterflow non-premixed flames of butane and butanol isomers. United States: N. p., 2016. Web. doi:10.1016/j.combustflame.2016.05.009.
Singh, Pradeep, & Sung, Chih-Jen. PAH formation in counterflow non-premixed flames of butane and butanol isomers. United States. doi:10.1016/j.combustflame.2016.05.009.
Singh, Pradeep, and Sung, Chih-Jen. 2016. "PAH formation in counterflow non-premixed flames of butane and butanol isomers". United States. doi:10.1016/j.combustflame.2016.05.009.
@article{osti_1334830,
title = {PAH formation in counterflow non-premixed flames of butane and butanol isomers},
author = {Singh, Pradeep and Sung, Chih-Jen},
abstractNote = {},
doi = {10.1016/j.combustflame.2016.05.009},
journal = {Combustion and Flame},
number = C,
volume = 170,
place = {United States},
year = 2016,
month = 8
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.combustflame.2016.05.009

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

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  • Results from computations of low strain rate, partially premixed methane/air counterflow flames are reported. The Oppdif computer code was used with GRI-Mech 2.11 to obtain the results. When the fuel-side equivalence ratio ({Phi}{sub B}) is above 2.5, the present flame structure can be described as a CH{sub 4}/air premixed flame merged with a CO/H{sub 2}/air nonpremixed flame. When {Phi}{sub B} is below 2.5, the two flame zones exist on opposite sides of the stagnation plane, and the CO/H{sub 2}/air nonpremixed flame is characterized by hydrocarbon concentration peaks on its fuel-side edge. Broad NO destruction regions, caused primarily by CH{sub i}more » + NO reactions, exist between the resulting double hydrocarbon concentration peaks. The fuel-side equivalence ratio is the most important indicator of how rapidly NO is destroyed relative to how rapidly it is formed, and NO destruction reactions are more important in pure diffusion flames than in partially premixed flames for the present low strain rate computations.« less
  • An experimental and computational study of NO formation in low-strain-rate partially premixed methane counterflow flames is reported. For progressive fuel-side partial premixing the peak NO concentration increased and the NO distribution along the stagnation streamline broadened. New temperature-dependent emissivity data for a SiO{sub 2}-coated Pt thermocouple was used to estimate the radiation correction for the thermocouple, thus improving the accuracy of the reported flame temperature. Flame structure computations with GRIMech 3.00 showed good agreement between measured and computed concentration distributions of NO and OH radical. With progressive partial premixing the contribution of the thermal NO pathway to NO formation increases.more » The emission index of NO (EINO) first increased and then decreased, reaching its peak value for the level of partial premixing that corresponds to location of the nonpremixed reaction zone at the stagnation plane. The observation of a maximum in EINO at a level of partial premixing corresponding to the nonpremixed reaction zone at the stagnation plane seems to be a consistent feature of low (<20 s{sup -1})-strain-rate counterflow flames. (author)« less