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Title: Direct numerical simulation of a high Ka CH 4/air stratified premixed jet flame

Here, direct numerical simulation (DNS) of a high Karlovitz number (Ka) CH 4/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 CH 4/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:
Report Number(s):
SAND-2018-2927J
Journal ID: ISSN 0010-2180; 661571
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Combustion and Flame
Additional Journal Information:
Journal Volume: 193; Journal Issue: C; Journal ID: ISSN 0010-2180
Publisher:
Elsevier
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
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
OSTI Identifier:
1457412