Measurements and simulations of ignition delay times and laminar flame speeds of nonane isomers

Yamada, S.; Shimokuri, Daisuke; Shy, S.S.; Yatsufusa, Tomoaki; Shinji, Yuta; Chen, Yi Rong; Liao, Yu; Endo, Tamio; Nou, Yoshihisa; Saito, Fumihiko; Sakai, Yasuyuki; Miyoshi, Akira

doi:10.1016/j.combustflame.2020.12.043

Cited by 2 publications

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“…As a result of analysis near the flammability limit ( = 0.6), it is found that plenty of i-C4H8 exists in the flame front of i-butane flame but little in n-butane flame. It is known that generated iC4H8 effectively removes H and OH radicals to form iC4H7, and furthermore, iC4H7 removes another H radical to form iC4H8 (Yamada et al, 2021), As indicated in the above reactions, iC4H8 converts H or OH radicals to H2 or H2O on the way to form iC4H7a, then, H radicals are further removed when iC4H7a returns to iC4H8. Due to this mechanism, i-butane tends to be unstable near the extinction limit, and therefore, higher CO is considered to be observed for i-butane than n-butane.…”

Section: Resultsmentioning

confidence: 98%

Effects of fuel on the performance of miniature vortex combustion power system

SHIMOKURI

2024

JTST

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which efficiency reached  = 4.6% with a output of 2.35W. Merotto et al. ( 2016) developed a powerful system using a catalytic combustor which utilized 417W of thermal input and reached 9.86W of electric output. A considerably powerful "vortex combustion power system" was developed in previous work (Shimokuri et al., 2015;Shimokuri et al., 2017) using a vortex combustor and TED. In the system, it was found that a flame of large surface area can be stabilized in narrow tubes by the vortex motion of the mixture, which attributes to the increase of the mixture consumption rate, and thus, the thermal input of the miniature vortex combustor. As a result, the thermal input was increased to 600W for

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Section: Resultsmentioning

confidence: 98%

Effects of fuel on the performance of miniature vortex combustion power system

SHIMOKURI

2024

JTST

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“…Structures of methyl pentanoate (MPE) and methyl-3,6-undecadienoate (MU3D6D). Carbon atoms in the two fuel molecules are labeled.…”

Section: Model Developmentmentioning

confidence: 99%

“…2 4 The same rate rules are adopted for all the C 5 −C 19 FAME fuels. To describe the rate rules adopted in this work, methyl pentanoate (MPE) 21 and methyl-3,6-undecadienoate (MU3D6D) are taken as representative molecules of saturated and unsaturated FAMEs, respectively. Their structures are presented in Figure 1.…”

Section: Mhx3d H C H H Mb3dmentioning

confidence: 99%

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High-Temperature Pyrolysis and Combustion of C₅–C₁₉ Fatty Acid Methyl Esters (FAMEs): A Lumped Kinetic Modeling Study

Zhang

Sarathy

2021

Energy Fuels

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In the effort to mitigate the depletion of fossil fuels and climate change, biodiesels are considered to be one of the most suitable substitutes for petro-diesel in compression ignition engine applications. As a follow up to prior modeling studies for gasoline and jet surrogate fuel components (Zhang, X.; Mani Sarathy, S. Fuel, 2021, 286, 119361), this work proposes a lumped kinetic model for both saturated and unsaturated C5–C19 fatty acid methyl esters (FAMEs) based on the same methodology. The present lumped model includes 52 FAME fuel components, covering a wide range of biodiesel surrogate fuel components, as well as components typically found in biodiesels. This methodology decouples the combustion of FAME fuels into two stages: the pyrolysis of fuel molecules and the oxidation of pyrolysis intermediates. Lumped reaction steps are used to describe the (oxidative) pyrolysis of each fuel molecule, while a detailed model (Aramcomech 2.0) is adopted as the base mechanism to describe the subsequent conversion of these key intermediates. Rate rules adopted for all the FAME fuels are consistent. The present lumped model is validated against experimental data from 20 pure FAMEs and six diesel/biodiesel surrogates, including around 130 sets of validation data. In general, the present lumped model satisfactorily captures most of these validation targets. This lumped model performs comparably with the detailed models developed in the literature under combustion conditions. Combined with the lumped model for 50 hydrocarbon fuels developed in previous work by this group, the lumped kinetic model for FAME fuels developed here can be used to predict the pyrolysis and combustion chemistry of diesel/biodiesel surrogates in CFD simulations after necessary model reduction for the base model. Also, the stoichiometric parameters of the lumped reactions for various pure FAMEs can be used as the database for data science study in FGMech development for real biodiesels.

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Measurements and simulations of ignition delay times and laminar flame speeds of nonane isomers

Cited by 2 publications

References 43 publications

Effects of fuel on the performance of miniature vortex combustion power system

Effects of fuel on the performance of miniature vortex combustion power system

High-Temperature Pyrolysis and Combustion of C₅–C₁₉ Fatty Acid Methyl Esters (FAMEs): A Lumped Kinetic Modeling Study

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Measurements and simulations of ignition delay times and laminar flame speeds of nonane isomers

Cited by 2 publications

References 43 publications

Effects of fuel on the performance of miniature vortex combustion power system

Effects of fuel on the performance of miniature vortex combustion power system

High-Temperature Pyrolysis and Combustion of C5–C19 Fatty Acid Methyl Esters (FAMEs): A Lumped Kinetic Modeling Study

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Product

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High-Temperature Pyrolysis and Combustion of C₅–C₁₉ Fatty Acid Methyl Esters (FAMEs): A Lumped Kinetic Modeling Study