Journal ArticleDOI
Comparative analysis of detailed and reduced kinetic models for CH 4 + H 2 combustion
TLDR
In this article, two detailed kinetic mechanisms, namely AramcoMech 2.0 and recently updated Konnov mechanism, were validated using available measurements of ignition delay times and laminar burning velocities for hydrogen, methane and hydrogen+methane fuel mixtures.About:
This article is published in Fuel.The article was published on 2019-06-15. It has received 16 citations till now. The article focuses on the topics: Flame structure.read more
Citations
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Kinetic and Fluid Dynamics Modelling of a Methane/Hydrogen Jet Flames in Diluted Coflow
TL;DR: In this paper, the effects of various modeling strategies on the prediction of the JHC flame structure using the CFD code FLUENT 6.3.26 have been discussed and validated in the conditions of interest using recent literature data and support the proposed approach as a useful tool for optimizing the design of new burners also in the MILD combustion regime.
Journal ArticleDOI
Chemical mechanism development and reduction for combustion of NH3/H2/CH4 mixtures
TL;DR: In this article, a detailed chemical model for comprehensive prediction of ammonia/hydrogen/methane mixture combustion was presented. But the model was not suitable for CFD modeling, and the speedup factor was over 5 when using the reduced mechanism with different codes.
Journal ArticleDOI
The behavior of methane/hydrogen/air premixed flame in a closed channel with inhibition
TL;DR: In this paper, a closed channel with either nitrogen (N2) or carbon dioxide (CO2) as the inhibitor was used to enhance the safety of HNG through inhibition by inert gases.
Journal ArticleDOI
Plasmonic silver (Ag)-based photocatalysts for H2 production and CO2 conversion: Review, analysis and perspectives
TL;DR: In this article , the most recent developments regarding highly efficient photocatalytic composites containing plasmonic silver (Ag) are reported, with a detailed description of their Surface Plasmon Resonance (SPR) mechanisms, structural and electrochemical properties and their application in renewable fuel production through photocatalysis.
Journal ArticleDOI
Comparative Chemical Kinetic Analysis and Skeletal Mechanism Generation for Syngas Combustion with NOx Chemistry
TL;DR: In this article, the authors proposed strategies to reduce emission and improve the efficiency of syngas combustion by reducing nitrogen oxides (NOx) emissions from the combustion of the gas.
References
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ReportDOI
Chemkin-II : A Fortran Chemical Kinetics Package for the Analysis of Gas Phase Chemical Kinetics
Journal ArticleDOI
A directed relation graph method for mechanism reduction
Tianfeng Lu,Chung K. Law +1 more
TL;DR: In this article, a systematic approach for mechanism reduction was developed and demonstrated, which consists of the generation of skeletal mechanisms from detailed mechanism using directed relation graph with specified accuracy requirement, and the subsequent generation of reduced mechanisms from the skeletal mechanisms using computational singular perturbation based on the assumption of quasi-steady state species.
Journal ArticleDOI
Toward accommodating realistic fuel chemistry in large-scale computations
Tianfeng Lu,Chung K. Law +1 more
TL;DR: The need and prospect of incorporating realistic fuel chemistry in large-scale simulations of combustion phenomena and combustor performance are reviewed in this paper, where skeletal reduction especially through directed relation graph, time-scale reduction based on the concepts of quasi-steady species enabled through computational singular perturbation, the lumping of isomers and of species with similar diffusivities; on-the-fly stiffness removal; the relative merits of implicit versus explicit solvers; and computation cost minimization achieved through tabulation and the judicious re-sequencing of the computational steps in arithmetic evaluations.
Journal ArticleDOI
An efficient error-propagation-based reduction method for large chemical kinetic mechanisms
TL;DR: An application of the reduction procedure is presented for autoignition using a large iso-octane mechanism, which is automatic, is fast, has moderate CPU and memory requirements, and compares favorably to other existing techniques.
Journal ArticleDOI
An experimental and detailed chemical kinetic modeling study of hydrogen and syngas mixture oxidation at elevated pressures
Alan Keromnes,Wayne K. Metcalfe,Karl Alexander Heufer,Nicola Donohoe,Apurba K. Das,Apurba K. Das,Chih-Jen Sung,Jürgen Herzler,Clemens Naumann,Peter Griebel,Olivier Mathieu,Michael Krejci,Eric L. Petersen,William J. Pitz,Henry J. Curran +14 more
TL;DR: In this paper, a detailed chemical kinetic mechanism for hydrogen and H2/CO (syngas) mixtures has been updated, rate constants have been adjusted to reflect new experimental information obtained at high pressures and new rate constant values recently published in the literature, and good agreement was observed.
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