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Title: Direct numerical simulation of a high Ka CH4/air stratified premixed jet flame

Abstract

Here, direct numerical simulation (DNS) of a high Karlovitz number (Ka) CH4/air stratified premixed jet flame was performed and used to provide insights into fundamentals of turbulent stratified premixed flames and their modelling implications. The flame exhibits significant stratification where the central jet has an equivalence ratio of 0.4, which is surrounded by a pilot flame with an equivalence ratio of 0.9. A reduced chemical mechanism for CH4/air combustion based on GRI-Mech3.0 was used, including 268 elementary reactions and 28 transported species.

Authors:
 [1];  [2];  [2];  [3]
  1. Zhejiang Univ., Hangzhou (People's Republic of China); The Univ. of New South Wales, Wales, NSW (Australia)
  2. The Univ. of New South Wales, Wales, NSW (Australia)
  3. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1457412
Alternate Identifier(s):
OSTI ID: 1497643
Report Number(s):
SAND-2018-2927J; SAND2017-9878J
Journal ID: ISSN 0010-2180; 661571
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Combustion and Flame
Additional Journal Information:
Journal Volume: 193; Journal Issue: C; Journal ID: ISSN 0010-2180
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; 42 ENGINEERING; Direct numerical simulation; Turbulent flame; Mixture stratification; Mean shear; Chemical pathways

Citation Formats

Wang, Haiou, Hawkes, Evatt R., Savard, Bruno, and Chen, Jacqueline H. Direct numerical simulation of a high Ka CH4/air stratified premixed jet flame. United States: N. p., 2018. Web. doi:10.1016/j.combustflame.2018.03.025.
Wang, Haiou, Hawkes, Evatt R., Savard, Bruno, & Chen, Jacqueline H. Direct numerical simulation of a high Ka CH4/air stratified premixed jet flame. United States. doi:10.1016/j.combustflame.2018.03.025.
Wang, Haiou, Hawkes, Evatt R., Savard, Bruno, and Chen, Jacqueline H. Tue . "Direct numerical simulation of a high Ka CH4/air stratified premixed jet flame". United States. doi:10.1016/j.combustflame.2018.03.025. https://www.osti.gov/servlets/purl/1457412.
@article{osti_1457412,
title = {Direct numerical simulation of a high Ka CH4/air stratified premixed jet flame},
author = {Wang, Haiou and Hawkes, Evatt R. and Savard, Bruno and Chen, Jacqueline H.},
abstractNote = {Here, direct numerical simulation (DNS) of a high Karlovitz number (Ka) CH4/air stratified premixed jet flame was performed and used to provide insights into fundamentals of turbulent stratified premixed flames and their modelling implications. The flame exhibits significant stratification where the central jet has an equivalence ratio of 0.4, which is surrounded by a pilot flame with an equivalence ratio of 0.9. A reduced chemical mechanism for CH4/air combustion based on GRI-Mech3.0 was used, including 268 elementary reactions and 28 transported species.},
doi = {10.1016/j.combustflame.2018.03.025},
journal = {Combustion and Flame},
number = C,
volume = 193,
place = {United States},
year = {2018},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 7 works
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Figures / Tables:

Figure 1 Figure 1: Schematic of the DNS configuration.

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