An ignition delay and kinetic modeling study of methane, dimethyl ether, and their mixtures at high pressures
Ultan Burke,Kieran P. Somers,Peter O’Toole,Chis M. Zinner,Nicolas Marquet,Gilles Bourque,Eric L. Petersen,Wayne K. Metcalfe,Zeynep Serinyel,Henry J. Curran +9 more
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TL;DR: In this article, both experimental and chemical kinetic model-predicted ignition delay time data are provided covering a range of conditions relevant to gas turbine environments (T = 600-1600 K, p = 7-41 K, ϕ ǫ = 0.3, 0.5, 1.0, and 2.0 in ‘air’ mixtures).
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About: This article is published in Combustion and Flame. The article was published on 01 Feb 2015. and is currently open access. The article focuses on the topics: Ignition system & Flame speed.
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Figures
Table 3: CH4/DME mixture compositions (% molar volume) tested in the present study. 
Figure 11: Influence of equivalence ratio for 80/20 CH4/DME mixtures. – φ = 0.3, • – φ = 0.5, N – φ = 1.0, H – φ = 2.0. Open symbols are RCM data, filled symbols ST data. Lines are Mech 56.54 predictions. 
Figure 12: Sensitivity analyses for ignition delay times at p = 10 atm and at – φ = 2.0, – φ = 1.0, – φ = 0.5. 
Table 5: Low-temperature DME reactions treated as pressure dependent. CH3O . CH2 . CH3 + CH2O 
Figure 7: Influence of equivalence ratio on CH4 mixtures at – φ = 0.3, • – φ = 0.5, N – φ = 1.0, H – φ = 2.0. Open symbols are RCM data, filled symbols ST data, half-filled symbols are tailored-interface ST data. Lines are Mech 56.54 predictions. 
Figure 16: Sensitivity analysis at 827 K and φ = 0.50 at – 12.4 atm, – 24.7 atm.
Citations
Flame Dynamics and Chemistry in LRE Combustion Instability
Chung K. Law
- 22 Dec 2016
TL;DR: In view of the non-premixed nature of the fuel and oxidizerjets, there are two dominant modes of flame stabilization. The traditional view is that mixing betweenthe two jets will eventually lead to a region of strong reactivity and hence auto-ignition, while an alternate view, advanced recently and for largely non-auto-ignitive situations, is stabilization through the so-called tri-pathial flame (also known as triple flame), in which a lean and a rich premixed flame wing with atrailing diffusion flame branch is considered to be
Low-Temperature Combustion Kinetics of Methanol-Blended Gasoline and Methanol Synthesized Dimethyl Ether
Sayan Biswas,Vyaas Gururajan +1 more
- 01 Jan 2021
TL;DR: In this article, the effect of methanol/gasoline ratio on different low-temperature chemical pathways was investigated to find an optimum value in terms of combustion performance and emission.
Chemical Effect of DME on the Combustion and Heat Release of SI-CAI Hybrid Combustion Based on Micro Flame Ignition Strategy
Yifang Feng,Tao Chen,Hua Zhao +2 more
TL;DR: In this article , the carbon tracer method was used to separate the reaction of DME and gasoline in CFD simulation, and chemical reaction kinetic analysis was carried out to further improve the stability and reliability of hybrid combustion, MFI (Micro Flame Ignition) strategy has been proposed.
Modeling Combustion Chemistry using C3MechV4.0: An extension to mixtures of hydrogen, ammonia, alkanes, and cycloalkanes
Luna Pratali Maffei,Raymond Langer,Yuki Murakami,Scott W. Wagnon,Pengzhi Wang,Jiaxin Liu,Mohsin Raza,Yuxiang Zhu,Sanket Dadasaheb Girhe,Christian Schwenzer,Joachim Beeckmann,Stephen J. Klippenstein,Tiziano Faravelli,Heinz Pitsch,P. K. Senecal,H. Curran +15 more
References
Density‐functional thermochemistry. III. The role of exact exchange
TL;DR: In this article, a semi-empirical exchange correlation functional with local spin density, gradient, and exact exchange terms was proposed. But this functional performed significantly better than previous functionals with gradient corrections only, and fits experimental atomization energies with an impressively small average absolute deviation of 2.4 kcal/mol.
Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density
TL;DR: Numerical calculations on a number of atoms, positive ions, and molecules, of both open- and closed-shell type, show that density-functional formulas for the correlation energy and correlation potential give correlation energies within a few percent.
94.9K
Gaussian-3 (G3) theory for molecules containing first and second-row atoms
TL;DR: In this paper, a new theoretical procedure based on ab initio molecular-orbital theory for the calculation of molecular energies of compounds containing first (Li-F) and second row (Na-Cl) atoms is presented.
2.7K
A complete basis set model chemistry. VII. Use of the minimum population localization method
TL;DR: In this article, the authors demonstrate that the unphysical behavior of Mulliken populations obtained from extended basis set wave functions can lead to incomplete localization of orbitals by the Pipek-Mezey population localization method, and introduce a modification to correct this problem.
1.9K
A complete basis set model chemistry. V. Extensions to six or more heavy atoms
TL;DR: In this article, three new computational models denoted CBS−4, CBS−q, and CBS−Q, are introduced, based on the complete basis set second-order (CBS2) limit using the N−1 asymptotic convergence of N−configuration pair natural orbital (PNO) expansions.
1.5K