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

Wang, Haiou; Hawkes, Evatt R.; Savard, Bruno; Chen, Jacqueline H.

doi:10.1016/j.combustflame.2018.03.025

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

Journal Article · Tue Apr 24 00:00:00 EDT 2018 · Combustion and Flame

DOI:https://doi.org/10.1016/j.combustflame.2018.03.025· OSTI ID:1457412

Wang, Haiou ^[1]; Hawkes, Evatt R. ^[2]; Savard, Bruno ^[2]; Chen, Jacqueline H. ^[3]

Zhejiang Univ., Hangzhou (People's Republic of China); The Univ. of New South Wales, Wales, NSW (Australia)
The Univ. of New South Wales, Wales, NSW (Australia)
Sandia National Lab. (SNL-CA), Livermore, CA (United States)

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.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1457412

Alternate ID(s):: OSTI ID: 1497643

Report Number(s):: SAND--2018-2927J; 661571

Journal Information:: Combustion and Flame, Journal Name: Combustion and Flame Journal Issue: C Vol. 193; ISSN 0010-2180

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited By (1)

Towards the distributed burning regime in turbulent premixed flames Aspden, A. J.; Day, M. S.; Bell, J. B. Journal of Fluid Mechanics, Vol. 871 https://doi.org/10.1017/jfm.2019.316	journal	May 2019

Figures / Tables (25)

Figure 16: Part 1(p. 28)

Figure 16: part 2(p. 28)

Figure 17(p. 30)

Figure 18(p. 31)

Figure 19: Part 1(p. 33)

Figure 19: Part 2(p. 33)

Figure 20(p. 35)

Figure 21(p. 37)

Figure 22(p. 39)

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