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An ignition delay and kinetic modeling study of methane, dimethyl ether, and their mixtures at high pressures

Published on Feb 1, 2015in Combustion and Flame4.12
· DOI :10.1016/j.combustflame.2014.08.014
Ultan Burke10
Estimated H-index: 10
(National University of Ireland, Galway),
Kieran P. Somers13
Estimated H-index: 13
(National University of Ireland, Galway)
+ 7 AuthorsHenry J. Curran62
Estimated H-index: 62
(National University of Ireland, Galway)
Abstract
Abstract The development of accurate chemical kinetic models capable of predicting the combustion of methane and dimethyl ether in common combustion environments such as compression ignition engines and gas turbines is important as it provides valuable data and understanding of these fuels under conditions that are difficult and expensive to study in the real combustors. In this work, 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 atm, ϕ  = 0.3, 0.5, 1.0, and 2.0 in ‘air’ mixtures). The detailed chemical kinetic model (Mech_56.54) is capable of accurately predicting this wide range of data, and it is the first mechanism to incorporate high-level rate constant measurements and calculations where available for the reactions of DME. This mechanism is also the first to apply a pressure-dependent treatment to the low-temperature reactions of DME. It has been validated using available literature data including flow reactor, jet-stirred reactor, shock-tube ignition delay times, shock-tube speciation, flame speed, and flame speciation data. New ignition delay time measurements are presented for methane, dimethyl ether, and their mixtures; these data were obtained using three different shock tubes and a rapid compression machine. In addition to the DME/CH4 blends, high-pressure data for pure DME and pure methane were also obtained. Where possible, the new data were compared with existing data from the literature, with good agreement.
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References69
Newest
#1Sinéad M. Burke (National University of Ireland, Galway)H-Index: 9
#2Wayne K. Metcalfe (National University of Ireland, Galway)H-Index: 27
Last.Henry J. Curran (National University of Ireland, Galway)H-Index: 62
view all 8 authors...
#1Friederike Herrmann (Bielefeld University)H-Index: 4
#2Bernhard Jochim (RWTH Aachen University)H-Index: 3
Last.Katharina Kohse-Höinghaus (Bielefeld University)H-Index: 49
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#1Daniel Darcy (National University of Ireland, Galway)H-Index: 5
#2Hisasi Nakamura (National University of Ireland, Galway)H-Index: 48
Last.Henry J. Curran (National University of Ireland, Galway)H-Index: 62
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#1Wayne K. Metcalfe (National University of Ireland, Galway)H-Index: 27
#2Sinéad M. Burke (National University of Ireland, Galway)H-Index: 9
Last.Henry J. Curran (National University of Ireland, Galway)H-Index: 62
view all 4 authors...
#1Christopher J. Aul (A&M: Texas A&M University)H-Index: 7
#2Wayne K. Metcalfe (National University of Ireland, Galway)H-Index: 27
Last.Eric L. Petersen (A&M: Texas A&M University)H-Index: 37
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#1Alan Kérmonès (National University of Ireland, Galway)H-Index: 8
#2Wayne K. Metcalfe (National University of Ireland, Galway)H-Index: 27
Last.Henry J. Curran (National University of Ireland, Galway)H-Index: 62
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#1Alexander Eremin (RAS: Russian Academy of Sciences)H-Index: 13
#2Ekaterina Mikheyeva (Bauman Moscow State Technical University)H-Index: 2
#1Panagiotis Stathopoulos (Technical University of Berlin)H-Index: 4
#2Tim S. Rähse (Technical University of Berlin)H-Index: 1
Last.Neda Djordjevic (Technical University of Berlin)H-Index: 7
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#1Yongxiang Zhang (Hunan University)H-Index: 1
#2Jianqin Fu (Hunan University)H-Index: 15
Last.Yanshan Yin (CSUST: Changsha University of Science and Technology)H-Index: 2
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#1Florian vom Lehn (RWTH Aachen University)H-Index: 1
#2Liming Cai (RWTH Aachen University)H-Index: 11
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#1Yuying Chen (BIT: Beijing Institute of Technology)H-Index: 2
#2Xinming Qian (BIT: Beijing Institute of Technology)H-Index: 3
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#1Simon Drost (KIT: Karlsruhe Institute of Technology)
#2Robert Schießl (KIT: Karlsruhe Institute of Technology)H-Index: 9
Last.Ulrich Maas (KIT: Karlsruhe Institute of Technology)H-Index: 30
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#1Yanlei Shang (Southwest Jiaotong University)H-Index: 2
#2J. C. Shi (Southwest Jiaotong University)H-Index: 3
Last.Sheng-Nian Luo (Southwest Jiaotong University)H-Index: 18
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#1Yiguang Ju (Princeton University)H-Index: 57
#2Christopher B. Reuter (Princeton University)H-Index: 8
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