Journal ArticleDOI
Detailed numerical simulation of transient mixing and combustion of premixed methane/air mixtures in a pre-chamber/main-chamber system relevant to internal combustion engines
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TLDR
In this article, a simplified prechamber/main-chamber system is investigated using direct numerical simulation (DNS) with detailed chemical kinetics, and the progress and topology of flame evolution, and mean burning velocity in the main chamber are analyzed in detail.About:
This article is published in Combustion and Flame.The article was published on 2018-02-01. It has received 61 citations till now. The article focuses on the topics: Premixed flame & Diffusion flame.read more
Citations
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Effects of hydrogen and initial pressure on flame characteristics and explosion pressure of methane/hydrogen fuels
TL;DR: In this article, the effects of diffusional-thermal and hydrodynamic instability on flame destabilization were investigated systematically by varying hydrogen addition and initial pressure, and the most enhancing and inhibiting reactions to laminar flame velocity were found in the lean, stoichiometric and rich mixture.
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Large-eddy simulation of dual-fuel ignition: Diesel spray injection into a lean methane-air mixture
TL;DR: In this paper, large-eddy simulation (LES) together with a finite-rate chemistry model is utilized for the investigation of a dual-fuel (DF) ignition process where a diesel surrogate (n-dodecane) spray ignites a lean methane-air mixture in engine relevant conditions.
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Experimental and numerical investigations of the unscavenged prechamber combustion in a rapid compression and expansion machine under engine-like conditions
TL;DR: In this paper, the authors investigated the prechamber combustion of lean methane/air mixtures in a Rapid Compression Expansion Machine (RCEM) by combining optical diagnostics (high speed OH*-chemiluminescence and Schlieren imaging) and 3D Computational Fluid Dynamic (CFD) simulations.
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Large Eddy Simulation of Pre-Chamber Ignition in an Internal Combustion Engine
Quentin Malé,Gabriel Staffelbach,Olivier Vermorel,Antony Misdariis,Frederic Ravet,Thierry Poinsot +5 more
TL;DR: In this article, the behavior of a pre-chamber ignition system used to ignite the main chamber of a real engine is studied using large eddy simulation with direct integration of analytically reduced chemistry using the dynamic thickened flame model.
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Potential of bio-ethanol in different advanced combustion modes for hybrid passenger vehicles
Antonio García,Javier Monsalve-Serrano,Santiago Martínez-Boggio,Vinícius Rückert Roso,Nathália Duarte Souza Alvarenga Santos +4 more
TL;DR: In this paper, a pre-chamber ignition system (PCIS) using bio-ethanol and hydrogen, and a reactivity-controlled compression ignition (RCCI) combustion mode operating with bioethanol/diesel was selected due to the potential to reduce NOx emissions.
References
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Journal ArticleDOI
Total variation diminishing Runge-Kutta schemes
Sigal Gottlieb,Chi-Wang Shu +1 more
TL;DR: A class of high order TVD (total variation diminishing) Runge-Kutta time discretization initialized in Shu& Osher (1988), suitable for solving hyperbolic conservation laws with stable spatial discretizations is explored, verifying the claim that TVD runge-kutta methods are important for such applications.
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On the Adequacy of Certain Experimental Observables as Measurements of Flame Burning Rate
TL;DR: In this paper, the authors investigated the utility of several experimental observables as measurements of local burning and heat release rates for a premixed stoichiometric N2-diluted methane-air flame in two-dimensional unsteady vortical flow.
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Planar laser-induced fluorescence imaging of flame heat release rate
Phillip H. Paul,Habib N. Najm +1 more
TL;DR: In this article, a single-pulse reaction-front imaging diagnostic is proposed for single-shot measurements of turbulent-reacting flows, which is based on the pixel-by-pixel product of OH and CH2O planar laser-induced fluorescence (PLIF) images.
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Direct numerical simulations of ignition of a lean n-heptane/air mixture with temperature inhomogeneities at constant volume: Parametric study
TL;DR: Curran et al. as mentioned in this paper investigated the effect of thermal stratification on the ignition of a lean homogeneous n -heptane/air mixture at constant volume and high pressure.
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Direct numerical simulation of ignition front propagation in a constant volume with temperature inhomogeneities: I. Fundamental analysis and diagnostics
TL;DR: In this paper, the influence of thermal stratification on autoignition at constant volume and high pressure is studied by direct numerical simulation (DNS) with detailed hydrogen/air chemistry with a view to providing better understanding and modeling of combustion processes in homogeneous charge compression-ignition engines.