Relevant bibliographies by topics / Combustion front quenching

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Combustion front quenching'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Combustion front quenching"

1

Gao, Jian Ying, Wan Jiang, and Gang Wang. "The Mechanism of the Formation of MoSi2 by Self-Propagating High-Temperature Synthesis." Key Engineering Materials 280-283 (February 2007): 1467–70. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.1467.

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A combustion front quenching (CFQ) technique was used to investigate the mechanism of selfpropagating high-temperature synthesis (SHS) of MoSi2 from Mo and Si powders. Based on the experimental results, a combination of reactive diffusion and dissolution-precipitation mechanism of the formation of MoSi2 was proposed, and a model corresponding to this mechanism was drawn.
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Martinez Pacheco, M., R. Bouma, O. Arias Cuevas, and Laurens Katgerman. "Experimental Study and Modelling of Combustion Front Velocity in Ti-2B and Ti-C Based Reactant Mixtures." Advances in Science and Technology 45 (October 2006): 2656–63. http://dx.doi.org/10.4028/www.scientific.net/ast.45.2656.

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Experiments on combustion synthesis for the Ti-2B and Ti-C systems diluted with an inert metal are presented. The paper shows the influence of geometry, composition, density and particle size of diluent on the combustion front velocity. A Ti-2B reactant mixture diluted with Al and Cu and a Ti-C reactant mixture diluted with Al are studied. The metallic diluent and its concentration are varied. Besides, each experiment is based on a stack of cylinders with decreasing diameter in order to vary the heat losses. In some experiments the eventual quenching of the combustion reaction has been observe
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3

Yang, S., and R. D. Reitz. "Improved combustion submodels for modelling gasoline engines with the level set G equation and detailed chemical kinetics." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 223, no. 5 (2009): 703–26. http://dx.doi.org/10.1243/09544070jauto1062.

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Five combustion submodels have been improved for modelling gasoline engines with the level set G equation and detailed chemical kinetics. These combustion submodels include a transport equation residual model, the introduction of a Damkohler criterion model for assessing the combustion regime of flame-containing cells, the precise calculation of ‘primary heat release’ based on the subgrid scale unburned or burned volumes of flame-containing cells, the modelling of flame front quenching in highly stratified mixtures, and a recently developed primary reference fuel (PRF) mechanism. In the transp
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Lau, Cheryl, Alexander Mukasyan, Aleksey Pelekh, and Arvind Varma. "Mechanistic studies in combustion synthesis of NiAl–TiB2 composites: Effects of gravity." Journal of Materials Research 16, no. 6 (2001): 1614–25. http://dx.doi.org/10.1557/jmr.2001.0224.

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Combustion synthesis (CS) of NiAl-based materials reinforced by TiB2 particles was investigated under both terrestrial and microgravity conditions. The synthesized metal matrix composites (MMC) are characterized by very fine (<1 μm) reinforced particulates, which have strong bonding along their entire surface with matrix (NiAl) and are distributed uniformly in it. It was found that microgravity leads to a decrease in the average TiB2 particle size, while higher volume fraction of NiAl component in the material leads to the formation of coarser reinforced particulates. The mechanism of struc
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Shen, Ping, Binglin Zou, and Qichuan Jiang. "Effect of TiO2 addition on the combustion synthesis in the Ti–B4C system." Journal of Materials Research 23, no. 5 (2008): 1327–33. http://dx.doi.org/10.1557/jmr.2008.0159.

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The effects of TiO2 addition on the reaction behavior, product, and mechanism in the Ti–B4C system were investigated in this study. The reaction could be self-sustaining for the TiO2 addition no more than ∼33% of the total weight of the reactants. With an increase in the TiO2 addition, the combustion temperature and wave velocity decrease progressively, the ignition delay time first decreases and then increases, while the constituents of the reaction products do not vary significantly unless the relative addition content of TiO2 exceeds ∼22 wt%. Therefore, TiO2 could be used as a favorable rea
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Maksimov, Yu M., O. K. Lepakova, and L. G. Raskolenko. "Combustion mechanism of a titanium-boron system with the use of quenching of the reaction front." Combustion, Explosion, and Shock Waves 24, no. 1 (1988): 43–48. http://dx.doi.org/10.1007/bf00749069.

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Yang, Pan, Guoqing Xiao, Donghai Ding, et al. "Mechanism of self-propagating hightemperature synthesis of AlB2‒Al2O3." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 1 (April 26, 2019): 27–36. http://dx.doi.org/10.17073/1683-4518-2019-1-27-36.

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The mechanism of self-propagating high-temperature synthesis (SHS) of AlB2‒Al2O3 composite powders was studied by means of a combustion front quenching method (CFQM). The results showed that combustion reaction started with the melting of B2O3 and Al particles. As the combustion reaction proceeded, the interpenetration of Al and B2O3 in melts happened. The XRD results of the product revealed the reflections of Al2O3, suggesting there had been an exchange of oxygen atoms between Al and B, and evidencing the reaction, B2O3 (l) + 2Al (l) → 2B (s) + Al2O3 (l). Under higher temperature, some of B2O
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Karim, G. A., A. Hanafi, and S. A. Mehta. "Volatilization and Ignition of Oil Sand Samples During Intermittent Exposure to Hot Low-Velocity Air Streams." Journal of Energy Resources Technology 111, no. 2 (1989): 104–9. http://dx.doi.org/10.1115/1.3231404.

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The behavior of small oil sand samples was monitored experimentally when subjected repeatedly to low-velocity heated air streams, with either prompt quenching or slow cooling of the samples to their initial temperatures between these exposures. The stream temperature was either in the range of 300°C to 500°C in air or at higher temperatures of up to 760°C, while being exposed to the products of combustion of very lean hydrogen-air mixtures. This was done in relation to understanding better the associated processes in some in-situ recovery trials where stoppage of the combustion front and/or th
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Cincotti, Alberto, Giovanni Murgia, Roberto Orrù, and Giacomo Cao. "On the Modeling of the Copper Block Combustion Front Quenching Technique To Investigate Solid−Solid Self-Propagating High-Temperature Reactions." Industrial & Engineering Chemistry Research 40, no. 16 (2001): 3451–58. http://dx.doi.org/10.1021/ie0100277.

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10

Kro¨ner, M., J. Fritz, and T. Sattelmayer. "Flashback Limits for Combustion Induced Vortex Breakdown in a Swirl Burner." Journal of Engineering for Gas Turbines and Power 125, no. 3 (2003): 693–700. http://dx.doi.org/10.1115/1.1582498.

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Flame flashback from the combustion chamber into the mixing zone limits the reliability of swirl stabilized lean premixed combustion in gas turbines. In a former study, the combustion induced vortex breakdown (CIVB) has been identified as a prevailing flashback mechanism of swirl burners. The present study has been performed to determine the flashback limits of a swirl burner with cylindrical premixing tube without centerbody at atmospheric conditions. The flashback limits, herein defined as the upstream flame propagation through the entire mixing tube, have been detected by a special optical
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Dissertations / Theses on the topic "Combustion front quenching"

1

Weiß, Sebastian. "Early Stages of the Aluminothermic Process: Insights into Separation and Mould Filling." 2018. https://tubaf.qucosa.de/id/qucosa%3A33552.

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The aluminothermic (AT) process utilises a self-propagating high-temperature synthesis (SHS) type reaction for producing primarily thermite steel and alumina slag at high temperatures during the welding of rails. In this work, an investigation on the early stages of the aluminothermic process, the separation of AT reaction products and mould filling has been carried out, using both experimental and computational methods to predict the time duration of a complete separation and to obtain a better understanding of the internal multiphase flow within the crucible and mould. The decomposition of A
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Conference papers on the topic "Combustion front quenching"

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Liu, Yafeng, Stuart R. Bell, and K. Clark Midkiff. "Development of a Phenomenological Combustion Simulation for a Dual Fuel Engine." In ASME 2001 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-ice-413.

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Abstract A phenomenological cycle simulation for a dual fuel engine has been developed to mathematically simulate the significant processes of the engine cycle, to predict specific performance parameters for the engine, and to investigate approaches to improve performance and reduce emissions. The simulation employs two zones (crevice and unburned) during the processes of exhaust, intake, compression before fuel injection starts, and expansion after combustion ends. From the start of fuel injection to the end of combustion, several, zones are utilized to account for crevice flow, diesel fuel s
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Keros, Peter E., Dimitris Assanis, Jill Schlechtweg, and Margaret S. Wooldridge. "Fast Methods to Analyze High-Speed Images of HCCI and Spark-Assisted HCCI Ignition Events." In ASME 2010 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/icef2010-35143.

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This study presents two new methods to rapidly analyze the ignition and combustion events recorded during in-cylinder high-speed imaging of homogeneous charge compression ignition (HCCI) and spark-assisted (SA) HCCI engine operation. Two categories of ignition have been observed during HCCI and SA HCCI: auto-ignition of parcels of fuel/air and ignition and propagation of reaction fronts. In this work, two methods of image analysis are developed which accommodate differences in the ignition and propagation events for the two categories. The methods are described by application to high speed ima
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3

Bedick, Clinton R., Nathan T. Weiland, and Peter A. Strakey. "Reaction Zone Characterization in a Gas Turbine Model Validation Combustor." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95991.

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The Enclosed Sydney Swirl Burner (ESSB), a half-scale version of the Sydney Swirl Burner coupled to an optically accessible combustion chamber, was recently constructed at the National Energy Technology Laboratory for the purpose of generating global emissions and model validation data in a configuration relevant to industrial and gas turbine combustion. The ESSB is capable of diffusion flame combustion of CH4/H2/inert fuel mixtures in highly swirling air flow over a bluff body, and can produce a wide variety of flame types and structures for study. Based on stability characteristics and globa
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4

Kro¨ner, Martin, Jassin Fritz, and Thomas Sattelmayer. "Flashback Limits for Combustion Induced Vortex Breakdown in a Swirl Burner." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30075.

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Flame flashback from the combustion chamber into the mixing zone limits the reliability of swirl stabilized lean premixed combustion in gas turbines. In a former study, the combustion induced vortex breakdown (CIVB) has been identified as a prevailing flashback mechanism of swirl burners. The present study has been performed to determine the flash-back limits of a swirl burner with cylindrical premixing tube without centerbody at atmospheric conditions. The flashback limits, herein defined as the upstream flame propagation through the entire mixing tube, have been detected by a special optical
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5

Peswani, Mohnish, and Brian McN Maxwell. "Performance of a Generic 4-Step Global Reaction Mechanism With Equilibrium Effects for Detonation Applications." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23786.

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Abstract A reduced 4-species, 4-step Global Reaction Mechanism (GRM) [1], derived from detailed chemistry using a thermochemical approach, is investigated for three different reactive mixtures. The trade-off between preciseness of Elementary Reaction Mechanisms (ERMs), and low computational overhead requirements of GRMs remains a dilemma in the application of chemical kinetic models to detonation problems. Reducing a reaction mechanism often compromises the chemical details, and reduces the scope of applicability of the derived model. This is largely due to the mixture chemistry having a vital
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6

Langone, Leonardo, Julia Sedlmaier, Pier Carlo Nassini, Lorenzo Mazzei, Stefan Harth, and Antonio Andreini. "Numerical Modeling of Gaseous Partially Premixed Low-Swirl Lifted Flame at Elevated Pressure." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-16305.

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Abstract Lifted flames have been investigated in the past years for their benefits in terms of NOx emissions reduction for gas turbine applications. In a lifted flame, the flame front stabilized on a position that is significantly detached from the nozzle exit, improving the premixing process before the reaction zone. The distance between the flame front and the nozzle exit is called lift-off height and it represents the main parameter that characterize this type of flame. In the present work, a partially premixed lifted flame employing air-methane mixture is investigated through numerical sim
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7

Goldin, Graham, Zhuyin Ren, Hendrik Forkel, Liuyan Lu, Venkat Tangirala, and Hasan Karim. "Modeling CO With Flamelet-Generated Manifolds: Part 2 — Application." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69546.

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Conventional Flamelet Generated Manifold (FGM) closure of the mean progress variable reaction rate assumes PDF shapes to account for turbulent fluctuations. The FGM parameters are commonly assumed to be statistically independent, and the marginal PDFs invariably require second moments, which are difficult to model accurately and have limited coefficients that can be adjusted to calibrate the simulation. A new model is presented which locates the flame brush with a turbulent flame speed model, and applies the FGM kinetic rate to model kinetically limited processes, such as CO quenching, behind
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