Experimental and modeling study on auto-ignition characteristics of methane/hydrogen blends under engine relevant pressure

Ying-jia, Zhang; Jiang, Xue; Wei, Leilei; Zhang, Jiaxiang; Tang, Chenglong; Huang, Zuohua

doi:10.1016/j.ijhydene.2012.09.056

Cited by 92 publications

(41 citation statements)

References 26 publications

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“…Previous fundamental combustion studies on the hydrogen enriched hydrocarbons were widely conducted in the past years including the ignition delay times using shock tubes [13,14] and rapid compression machines [15], laminar flame speeds using the spherically expanding flame method [16,17], the stagnation flame method [18,19] and the heat flux method [20], radical concentrations [21] and numerical modeling works [22,23]. Lifshitz et al [24] were the first to experimentally report the high temperature ignition delays of methane/hydrogen mixtures using a shock tube.…”

Section: Introductionmentioning

confidence: 99%

“…Subsequently, a large number of studies have focused on methane/hydrogen [25e30]. More recently, a more systematic investigation on auto-ignition characteristics of methane/hydrogen mixtures was conducted by Zhang et al [13], and three auto-ignition regimes were identified. There are relatively small investigations on hydrogen enriched hydrocarbon higher than methane [31e35].…”

Section: Introductionmentioning

confidence: 99%

“…It is clear that the previous studies on the ignition delay times mainly concentrated on the influence of hydrogen addition, and little data are available on the effect of pressure and equivalence ratio. The ignition delay time studies on hydrogen/methane by Zhang et al [13], hydrogen/natural gas by Herzler et al [39] and hydrogen/propane by Tang et al [33] indicated that the dependence of ignition delay times on equivalence ratio and pressure changed at different hydrogen fractions. DME is a promising alternative fuel for the compressionignition engines because of its potential low HC and soot emissions compared with the traditional fuels (gasoline, kerosene).…”

Section: Introductionmentioning

confidence: 99%

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Effect of pressure and equivalence ratio on the ignition characteristics of dimethyl ether-hydrogen mixtures

Pan

Deng

et al. 2014

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of pressure and equivalence ratio on the ignition characteristics of dimethyl ether-hydrogen mixtures

Pan

Deng

et al. 2014

International Journal of Hydrogen Energy

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“…constant U, V) is unable to reproduce the longer ignition. [18] Many previous studies [19][20][21][22] indicated that an obvious rise of pressure behind the reflected shock waves will be presented in the practical shock tube experiments due to the boundary layer growth and non-ideal effects, which lead to a significant decrease in the experimental ignition delays. In the current study, a similar observation was also found in the shock tube experiments, as shown in Figure 2.…”

Section: Simulated Proceduresmentioning

confidence: 99%

Study on ignition delay of multi‐component syngas using shock tube

Thi

Zhang

et al. 2013

Can J Chem Eng

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Ignition delays of four typical syngas mixtures were investigated using both experimental and simulated methods. The shock tube experiments were conducted behind the reflected shock waves at temperature ranges from 870 to 1 350 K, pressures of 0.2, 1.0 and 2.0 MPa. Six available kinetic models were evaluated by comparing them to the new ignition delay data obtained. NUIG C3 model was in good agreement with the experimental results. The effect of the pressure on ignition delay of all four syngas mixtures was similar to that of hydrogen. The promoting and inhibiting ignition were experimentally observed at high and moderate temperatures, respectively. Sensitivity analyses were conducted at different temperatures and pressures to identify the dominant elementary reactions in the ignition process of the syngas. The results indicated that the ignition delay was generally most sensitive to the chain branching reaction H þ O 2 ¼ O þ OH at both high and low temperatures. Decomposition reaction H 2 O (þM) ¼ H þ OH (þM) was of importance for the syngas with relative inert gas CO 2 and N 2 at a high temperature. The reaction CO þ OH ¼ CO 2 þ H involving CO kinetic dominated the ignition at a high temperature for the syngas with a high CO level. The inhibiting effect of pressure was attributed to the decrease of sensitivity of the reactions H þ O 2 ¼ O þ OH and O þ H 2 ¼ H þ OH and the increase of sensitivity of the reaction H þ O 2 (þM) ¼ HO 2 (þM) at a moderate-low temperature.

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“…Later, Walker conducted experiments using a shock tube and a simulation at 1223-2248 K and 0.65-1.42 atm and with equivalent ratios of ɸ=0.5 and 1.0. Zhang et al [10] conducted experiments and a kinetics to understand ignition for a mixture of methane and hydrogen at 900-1750 K and 1.8 MPa and with ɸ=0.5-2.0. Based on these experiments, kinetics studies were conducted under low pressure.…”

Section: Introductionmentioning

confidence: 99%

Simulation of ignition delay time of compressed natural gas combustion

Muharam¹,

Mahendra

Gayatri

et al. 2015

Int. J. Automot. Mech. Eng.

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This research mainly aims to simulate compressed natural gas (CNG) combustion to create a valid reaction mechanism that can be used to determine the effects of temperature, pressure, equivalent ratio, diluents composition, and CNG composition on the ignition delay time profile in a combustion reaction. The combustion reaction involves many elementary reactions; therefore, in this study, the stages of important reactions were identified by sensitivity and rate of production analyses. In this study, CNG was represented by three components, namely, methane, ethane and propane (CH4/C2H6/C3H8). The model is arranged according to the literature and validates the experimental data for CH4/C2H6/C3H8/O2/N2 mixture in the temperature (T) range of 1039-1553 K, initial pressure (P) range of 1.1-40.0 atm, and equivalent ratio (ɸ) = 0.5, 1.0, and 2.0 using a shock tube. The software used in this study is Chemkin 3.7.1. The ignition delay time profile for CNG combustion has been successfully reproduced by the kinetic model. The slowest ignition delay time for the composition of 88% CH4/8% C2H6/4% C3H8 with an initial temperature range of 1100-1500 K is 37.2 ms (P=2 atm, T=1100 K, and ɸ=2.0) and the fastest IDT is 0.033 ms (P=30 atm, T=1500 K, and ɸ=0.5). For constant ethane or propane composition, the increase in methane composition will cause slower ignition.

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Experimental and modeling study on auto-ignition characteristics of methane/hydrogen blends under engine relevant pressure

Cited by 92 publications

References 26 publications

Effect of pressure and equivalence ratio on the ignition characteristics of dimethyl ether-hydrogen mixtures

Effect of pressure and equivalence ratio on the ignition characteristics of dimethyl ether-hydrogen mixtures

Study on ignition delay of multi‐component syngas using shock tube

Simulation of ignition delay time of compressed natural gas combustion

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