A Detailed and Reduced Reaction Mechanism of Biomass-Based Syngas Fuels

2010 ◽  
Vol 132 (9) ◽  
Author(s):  
Marina Braun-Unkhoff ◽  
Nadezhda Slavinskaya ◽  
Manfred Aigner
Keyword(s):  
Reaction Mechanism ◽  
Laminar Flame ◽  
Chemical Kinetic ◽  
Laminar Flame Speed ◽  
Predictive Capability ◽  
Kinetic Reaction ◽  
Auto Ignition ◽  
Combustion Properties ◽  
Detailed Chemical ◽  
Good Agreement

In the present work, the elaboration of a reduced kinetic reaction mechanism is described, which predicts reliably fundamental characteristic combustion properties of two biogenic gas mixtures consisting mainly of hydrogen, methane, and carbon monoxide, with small amounts of higher hydrocarbons (ethane and propane) in different proportions. From the in-house detailed chemical kinetic reaction mechanism with about 55 species and 460 reactions, a reduced kinetic reaction mechanism was constructed consisting of 27 species and 130 reactions. Their predictive capability concerning laminar flame speed (measured at T0=323 K, 373 K, and 453 K, at p=1 bar, 3 bars, and 6 bars for equivalence ratios φ between 0.6 and 2.2) and auto ignition data (measured in a shock tube between 1035 K and 1365 K at pressures around 16 bars for φ=0.5 and 1.0) are discussed in detail. Good agreement was found between experimental and calculated values within the investigated parameter range.

A Detailed and Reduced Reaction Mechanism of Biomass-Based Syngas Fuels

2009 ◽  
Author(s):  
Marina Braun-Unkhoff ◽  
Nadezhda Slavinskaya ◽  
Manfred Aigner
Keyword(s):  
Reaction Mechanism ◽  
Laminar Flame ◽  
Chemical Kinetic ◽  
Laminar Flame Speed ◽  
Predictive Capability ◽  
Kinetic Reaction ◽  
Auto Ignition ◽  
Combustion Properties ◽  
Detailed Chemical ◽  
Good Agreement

In the present work, the elaboration of a reduced kinetic reaction mechanism is described which predicts reliably fundamental characteristic combustion properties of two biogenic gas mixtures consisting mainly of hydrogen, methane, and carbon monoxide, with small amounts of higher hydrocarbons (ethane and propane), in different proportions. From the in-house detailed chemical kinetic reaction mechanism with about 55 species and 460 reactions, a reduced kinetic reaction mechanism was constructed consisting of 27 species and 130 reactions. Their predictive capability concerning laminar flame speed (measured at T0 = 323 K, 373 K and 453 K, at p = 1 bar, 3 bar, and 6 bar for equivalence ratios φ between 0.6 and 2.2) and auto ignition data (measured in a shock tube between 1035 and 1365 K at pressures around 16 bar for φ = 0.5 and 1.0) are discussed in detail. Good agreement was found between experimental and calculated values within the investigated parameter range.

scholarly journals A comprehensive detailed chemical kinetic reaction mechanism for combustion of n-alkane hydrocarbons from n-octane to n-hexadecane

2009 ◽  
Vol 156 (1) ◽  
pp. 181-199 ◽  
Author(s):  
Charles K. Westbrook ◽  
William J. Pitz ◽  
Olivier Herbinet ◽  
Henry J. Curran ◽  
Emma J. Silke
Keyword(s):  
Reaction Mechanism ◽  
Chemical Kinetic ◽  
Kinetic Reaction ◽  
Detailed Chemical

Enhancement of a Detailed Mechanism of Propene

2010 ◽  
Author(s):  
Marina Braun-Unkhoff ◽  
Nadezhda Slavinskaya ◽  
Manfred Aigner
Keyword(s):  
Ignition Delay Time ◽  
Soot Formation ◽  
Laminar Flame ◽  
Gas Mixtures ◽  
Reaction Model ◽  
Laminar Flame Speed ◽  
Predictive Capability ◽  
Combustion Properties ◽  
Important Intermediate ◽  
Oxygen Gas

Propene (C3H6) is an important constituent of practical hydrocarbons fuels and an important intermediate in the combustion of these fuels. Furthermore, synthetic gases such as biogenic gas mixtures not only consist of hydrogen, methane, and carbon monoxide, but also of small amounts of higher hydrocarbons, in different proportions, including propene. In the present work, a detailed propene sub-model was constructed starting from an in-house reaction model (DLR-LS) shown previously to describe major combustion properties including PAH and soot formation for several different fuel air flames. The predictive capability of the detailed propene submodel concerning laminar flame speed and ignition delay time of different propene-oxygen mixtures will be discussed. These data are needed to describe the heat release and to predict the possibility of a flashback. From these comparisons, it is concluded that the extended propene sub-model is capable to predict combustion properties of propene-oxygen gas mixtures.

scholarly journals A detailed chemical kinetic reaction mechanism for oxidation of four small alkyl esters in laminar premixed flames

2009 ◽  
Vol 32 (1) ◽  
pp. 221-228 ◽  
Author(s):  
C.K. Westbrook ◽  
W.J. Pitz ◽  
P.R. Westmoreland ◽  
F.L. Dryer ◽  
M. Chaos ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Premixed Flames ◽  
Chemical Kinetic ◽  
Alkyl Esters ◽  
Kinetic Reaction ◽  
Detailed Chemical

Skeletal Kinetic Modeling for the Combustion of Endothermic Hydrocarbon Fuel in Hypersonic Vehicle

2021 ◽  
pp. 1-24
Author(s):  
Hui-Sheng Peng ◽  
Bei-Jing Zhong
Keyword(s):  
Surrogate Model ◽  
Laminar Flame ◽  
Combustion Process ◽  
Hydrocarbon Fuel ◽  
Kinetic Mechanism ◽  
Chemical Kinetic ◽  
Vital Role ◽  
Reacting Flow ◽  
Combustion Properties ◽  
Endothermic Hydrocarbon Fuel

Abstract Chemical kinetic mechanism plays a vital role in the deep learning of reacting flow in practical combustors, which can help obtain many details of the combustion process. In this paper, a surrogate model and a skeletal mechanism for an endothermic hydrocarbon fuel were developed for further investigations of the combustion performance in hypersonic vehicles: (1) The surrogate model consists of 81.3 mol% decalin and 18.7 mol% n-dodecane, which were determined by both the composition distributions and key properties of the target endothermic hydrocarbon fuel. (2) A skeletal kinetic mechanism only containing 56 species and 283 reactions was developed by the method of “core mechanism​ sub mechanism”. This mechanism can be conveniently applied to the simulation of practical combustors for its affordable scale. (3) Accuracies of the surrogate model and the mechanism were systematically validated by the various properties of the target fuel under pressures of 1-20atm, temperatures of 400-1250K, and equivalence ratios of 0.5-1.5. The overall errors for the ignition and combustion properties are no more than 0.4 and 0.1, respectively. (4) Laminar flame speeds of the target fuel and the surrogate model fuel were also measured for the validations. Results show that both the surrogate model and the mechanism can well predict the properties of the target fuel. The mechanism developed in this work is valuable to the further design and optimization of the propulsion systems.

Effects of water vapor on auto-ignition characteristics and laminar flame speed of methane/air mixture under engine-relevant conditions

Fuel ◽  
2022 ◽  
Vol 315 ◽  
pp. 123169
Author(s):  
Zhipeng Yuan ◽  
Linming Xie ◽  
Xingyu Sun ◽  
Rumin Wang ◽  
Huaqin Li ◽  
...  
Keyword(s):  
Water Vapor ◽  
Laminar Flame ◽  
Flame Speed ◽  
Laminar Flame Speed ◽  
Auto Ignition ◽  
Ignition Characteristics

scholarly journals Development of a chemical-kinetic database for the laminar flame speed under GDI and water injection engine conditions

2018 ◽  
Vol 148 ◽  
pp. 154-161 ◽  
Author(s):  
Giulio Cazzoli ◽  
Stefania Falfari ◽  
Gian Marco Bianchi ◽  
Claudio Forte
Keyword(s):  
Laminar Flame ◽  
Water Injection ◽  
Chemical Kinetic ◽  
Flame Speed ◽  
Laminar Flame Speed
Sign in / Sign up

Export Citation Format

Share Document