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Relevant bibliographies by topics / Thermal ignition theory

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Journal articles
Dissertations / Theses
Book chapters
Conference papers

Academic literature on the topic 'Thermal ignition theory'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Thermal ignition theory"

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Mellor, A. M., S. C. Russell, S. Humer, and K. Seshadri. "Thermal ignition theory applied to diesel engine autoignition." International Journal of Engine Research 5, no. 2 (2004): 193–204. http://dx.doi.org/10.1243/146808704773564587.

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Zhao, Y. H., N. K. Chen, and J. S. Chin. "The Effect of Oxygen Concentration on Ignition of Fuel Spray in Low-Pressure Air Flow." Journal of Engineering for Gas Turbines and Power 107, no. 1 (1985): 18–23. http://dx.doi.org/10.1115/1.3239682.

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Further experimental research has been carried out on the ignition improvement by oxygen addition in a small pilot combustion chamber taken from an existing aeroengine. Both uniform mixture method and local oxygen injection method have been investigated. The results show that oxygen addition improves low-pressure ignition performance significantly. Local oxygen injection makes much better use of oxygen added. Experimental results show low evaporation percentage of fuel spray responsible for the poor ignition performance. Based on thermal ignition theory, a semianalytical equation has been obta

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El-Sayed, Saad A. "Ignition characteristics of metal particles in thermal explosion theory." Journal of Loss Prevention in the Process Industries 9, no. 6 (1996): 393–400. http://dx.doi.org/10.1016/s0950-4230(96)00020-4.

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Varatharajan, B., and F. A. Williams. "Ignition times in the theory of branched-chain thermal explosions." Combustion and Flame 121, no. 3 (2000): 551–54. http://dx.doi.org/10.1016/s0010-2180(99)00173-x.

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Lyubchenko, I. S., and G. N. Marchenko. "The Thermal Theory of the Ignition of Reacting Condensed Substances." Russian Chemical Reviews 56, no. 2 (1987): 121–35. http://dx.doi.org/10.1070/rc1987v056n02abeh003261.

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Yang, Jing-Tang, Gwo-Guang Wang, and Hung-Yi Li. "Modeling of the Convective Thermal Ignition Process of Solid Fuel Particles." Journal of Heat Transfer 112, no. 4 (1990): 995–1001. http://dx.doi.org/10.1115/1.2910511.

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This work uses the boundary layer theory to study the thermal ignition process of the solid particle. The theoretical model explores the two-dimensional boundary layer equations in the gaseous phase. The governing equations of mass, momentum, energy, and species in gas phase are first transformed to ordinary differential equations through series expansion with respect to the azimuthal angle. The equations are then quasi-linearized to be the initial value problem and solved using Runge-Kutta method. The minimum heat flux from the gas phase to the fuel is evaluated as the most suitable criterion

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Guo, Zerong, Quan Xia, Peiyu Yan, and Zhiming Du. "Influence of variable heat transfer coefficient of fireworks and crackers on thermal explosion critical ambient temperature and time to ignition." Thermal Science 20, no. 5 (2016): 1671–79. http://dx.doi.org/10.2298/tsci140815050g.

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To study the effect of variable heat transfer coefficient of fireworks and crackers on thermal explosion critical ambient temperature and time to ignition, considering the heat transfer coefficient as the power function of temperature, mathematical thermal explosion steady state and unsteady-state model of finite cylindrical fireworks and crackers with complex shell structures are established based on two-dimensional steady state thermal explosion theory. The influence of variable heat transfer coefficient on thermal explosion critical ambient temperature and time to ignition are analyzed. Whe

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Zhao, Yue, Dong Guang Li, Wen Zhong Lou, Long Fei Zhang, Jian Hua Li, and Mao Bo Fang. "Study of a MEMS Short-Circuit Fuse Based on Electro-Thermal Theory." Key Engineering Materials 503 (February 2012): 277–83. http://dx.doi.org/10.4028/www.scientific.net/kem.503.277.

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With development of MEMS pyrotechnics devices such as semiconductor bridge/metal bridges, the energy required to fuze ignition becomes smaller and smaller. The energy needed for traditional short-circuit is far greater than MEMS pyrotechnics devices explosive, and takes a large space of fuze, which does not accord with the smaller trend in fuse volume and ignition energy. This paper describes a MEMS short-circuit fuse based on electro-thermal theory, it has similar volume with MEMS pyrotechnics devices, and the energy required is less than the traditional shorts fuse. This short-circuit fuse h

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Balakrishnan, E., A. Swift, and G. C. Wake. "Multiple solutions in hollow geometries in the theory of thermal ignition." Applied Mathematics Letters 10, no. 5 (1997): 41–46. http://dx.doi.org/10.1016/s0893-9659(97)00081-5.

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Jones, J. C. "Application of Semenov Theory of Thermal Ignition to Chemical Process Safety." Journal of Fire Sciences 26, no. 3 (2008): 197–211. http://dx.doi.org/10.1177/0734904107081104.

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Dissertations / Theses on the topic "Thermal ignition theory"

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Beever, P. F. "Initiation and propagation of smouldering reactions." Thesis, University of Leeds, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374171.

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Book chapters on the topic "Thermal ignition theory"

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Wickström, Ulf. "Thermal Ignition Theory." In Temperature Calculation in Fire Safety Engineering. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30172-3_8.

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Putrasari, Yanuandri, and Ocktaeck Lim. "Combustion and Emissions of Gasoline Compression Ignition Engine Fuelled with Gasoline-Biodiesel Blends." In Internal Combustion Engine Technology and Applications of Biodiesel Fuel. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95877.

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A gasoline compression ignition (GCI) engine was proposed to be the next generation internal combustion engine for gasoline. The effect of exhaust gas recirculation (EGR) and intake boosting on combustion and emissions of GCI engine fueled with gasoline-biodiesel blends by partially premixed compression ignition (PPCI) combustions are investigated in this study. Tests were conducted on a single-cylinder direct-injection CI engine, with 5% by volume proportion of biodiesel in gasoline fuel blends. Engine control parameters (EGR rate, intake boosting rate, and various injection strategies) were adjusted to investigate their influences on combustion and emissions of this GCI engine. It is found that changes in EGR rate, intake boosting pressure and injection strategies affect on ignition delay, maximum pressure rise rate and thermal efficiency which is closely tied to HC, CO, NOx and smoke emissions, respectively.

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Assovskiy, Igor G. "Laser Ignition of Metalized Solid Propellants." In Energetic Materials Research, Applications, and New Technologies. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2903-3.ch004.

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This Chapter presents a theoretical analysis of radiation interaction with a semi-transparent metalized energetic material. Main regularities of the laser pulse interaction with metalized compositions are considered within the framework of non-resonant interaction of radiation with matter. The large variety of metalized composite propellants with different properties of the components, their ratio and dispersion can be divided into two classes, depending on the ratio of the laser irradiation's characteristic time (tr) and the thermal relaxation time of the propellant characteristic cell containing one metal particle (tm). Analysis of the role of metallic particles shape shows that in the case of spherical metal particles, duration of the laser pulse corresponds to the optimal size of particles, heated to a maximum temperature. In the case of flat metallic particles and constant pulse duration, the critical radiation flux and the critical density of ignition energy significantly decrease with decreasing thickness of the particle.

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Rano, Ruma. "Characterization of Magnetic and Non-Magnetic Components From a Low Carbon Fly Ash." In Global Perspectives on Air Pollution Prevention and Control System Design. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7289-3.ch002.

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Low carbon coal ash—a solid air pollutant from super thermal power plant using pulverized fuel combustor—has been characterized in respect of its physico-chemical, mineralogical, and morphological features. Size-classified fractions with their magnetic and non-magnetic components have also been characterized. Low loss on ignition and particle size distribution profile shows fly ash has high utility. The magic number,10 µm, is attained by greater % of particles. The particles with diameter 50 µm occupy population density of 93%. SEM-EDS reveals that particles are mostly globular with high surface enrichment of Al/Si indicating that it will act as un-reactive inert fillers. In magnetic components, various types of Fe bearing phase are present with less porous and more regular shape than non-magnetic components. Finer fractions have high content of magnetite which is expected to help in coal beneficiation. The finer non-magnetic fraction is a source of alumino-siliceous material for synthesizing a novel solid acid or base catalyst for catalyzing industrially important organic reactions.

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Conference papers on the topic "Thermal ignition theory"

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Gaydukova, O. S., D. O. Glushkov, A. G. Nigay, and A. G. Kosintsev. "MECHANISM AND CHARACTERISTICS OF GEL FUEL IGNITION." In 9TH INTERNATIONAL SYMPOSIUM ON NONEQUILIBRIUM PROCESSES, PLASMA, COMBUSTION, AND ATMOSPHERIC PHENOMENA. TORUS PRESS, 2020. http://dx.doi.org/10.30826/nepcap9a-22.

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Recently, prospective direction of the combustion theory development is the preparation of fuel compositions and study of the composite fuels ignition characteristics, for example, in the form of emulsions and suspensions. Such fuels and their combustion processes are characterized by higher environmental, energy, economic, and operational properties. Of great interest is the use of gel fuels prepared by thickening emulsions and suspensions to the state of elastically deformable materials for the aerospace industry and thermal power engineering. Gel fuels have advantages over widespread liquid

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Nakamura, Yuji. "Time-Dependent Mixture Formation and Heat Transfer Over Irradiated Solid Combustibles in Sub-Atmospheric Pressure Enclosure." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32656.

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The aim of the present study is to elucidate the time-depended processes of combustible mixture formation, heat transfer from the heated solid surface and chemical reaction over irradiated solid combustibles in sub-atmospheric pressure enclosure. Final goal of this work is to explain observed ignition trend in sub-atmospheric pressure which is recently derived experimentally by author’s group, that is, required partial pressure of oxygen is “reduced” in sub-atmospheric range. Solid combustible is placed horizontally and irradiated from the bottom to induce an ignition spontaneously below the s

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Naitoh, Ken, Kentaro Kojima, Takuma Okamoto, et al. "Physical Theory of the Single-Point Auto-Ignition Engine Based on Supermulti-Jets Colliding with Pulse: Leading to Thermal Efficiency over 60% at Various Engine Speeds and Loads of Automobiles." In SAE 2014 International Powertrain, Fuels & Lubricants Meeting. SAE International, 2014. http://dx.doi.org/10.4271/2014-01-2640.

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Ogawa, Toshinori, and Yasuo Kawaguchi. "Performance Testing of 5cc Glow-Ignition Four-Stroke Engine." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32132.

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Although portable electric devices have become increasingly sophisticated and compact, the amount of energy required for their operation has increased and device performance may be restrained by the energy source in the near future. A small power source is also needed for mobile robots for home usage. Small, portable distributed power sources with higher energy density than the conventional battery are required. Since the energy density of hydrocarbon or hydrogen fuel is quite high compared to the battery, combustion micro engines that use these fuels are promising for this purpose. In this re

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Rahimi Boldaji, Mozhgan, Aimilios Sofianopoulos, Sotirios Mamalis, and Benjamin Lawler. "CFD Simulations of the Effect of Water Injection Characteristics on TSCI: A New, Load-Flexible, Advanced Combustion Concept." In ASME 2017 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icef2017-3662.

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Homogeneous Charge Compression Ignition (HCCI) combustion has the potential for high efficiency with very low levels of NOx and soot emissions. However, HCCI has thus far only been achievable in a laboratory setting due to the following challenges: 1) there is a lack of control over the start and rate of combustion, and 2) there is a very limited and narrow operating range. In the present work, the injection of water directly into the combustion chamber was investigated to solve the aforementioned limitations of HCCI. This new advanced combustion mode is called Thermally Stratified Compression

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Iijima, Akira, and Hideo Shoji. "A Spectroscopic Analysis of Combustion in Homogeneous Charge Compression Ignition Engine." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32552.

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The principal issues of Homogeneous Charge Compression Ignition (HCCI) combustion that must be addressed include ignition timing control and expansion of the stable operation region. Detailed analyses of ignition and combustion mechanisms must be undertaken to resolve these issues. In this study, spectroscopic technique was used to investigate the effects of the air-fuel ratio (AFR) and residual gas state on ignition and combustion characteristics. Spectroscopic measurement was made of light emission spectra. The results revealed that the distribution profile of the light emission intensity of

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Aggarwal, S. K., and D. E. Longman. "A Computational Study on the Effects of Pre-Ignition Processes on Diesel Engine Combustion and Emissions." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44202.

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There has been significant progress in reducing NOx and particulate emissions from diesel engines. However, many challenges remain particularly in view of the global energy issues and increasingly stringent emission regulations. Several recent efforts have focused on achieving low-temperature, premixed combustion for simultaneously reducing NOx and PM emissions, but without any detrimental effect on fuel consumption and energy density. Various strategies being explored include homogeneously charged compression ignition (HCCI), reducing flame temperature through excessive EGR, enhancing premixe

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Briones, Alejandro M., and Suresh K. Aggarwal. "Ignition and Propagation Characteristics of Hydrogen-Enriched Methane Flames." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-28132.

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The effects of H2 enrichment on the ignition and propagation of laminar CH4-air flames in axisymmetric coflowing jets are numerically investigated. A comprehensive, time-dependent computational model, which employs a detailed description of chemistry and transport, is used to simulate the transient ignition and flame propagation phenomena. Because fuel-air mixtures can potentially be ignited due to the presence of either a high-temperature zone or a radical pool, we explore temperature-induced ignition and radical-pool-induced ignition. It is observed overall that radical-pool-induced ignition

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Petersen, Eric L., Olivier Mathieu, James C. Thomas, et al. "Combustion and Oxidation of Lube Oils at Gas Turbine Conditions: Experimental Methods." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-60319.

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Abstract Because of the high temperatures involved, undesirable ignition events can happen during gas turbine operation, often necessitating expensive down time and repairs. The ignition events are frequently linked to the lubricant, a flammable mixture of large hydrocarbons with a very low vapor pressure. To understand better the role of the lubricant in such ignition events, increased understanding of the fundamental thermal and oxidation characteristics of such oils is needed. To this end, a suite of different tests has been set up and demonstrated at the TEES Turbomachinery Laboratory at T

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Tripathi, Abhinav, Chen Zhang, and Zongxuan Sun. "Experimental Investigation and Analysis of Auto-Ignition Combustion Dynamics." In ASME 2018 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dscc2018-9184.

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From engine controls’ perspective, understanding autoignition dynamics is a key to enabling new combustion modes for internal combustion engines, especially for renewable fuels. Conventional autoignition investigations of fuels commonly involve a rapid compression of oxidizer-fuel mixture to a desired set of temperature-pressure conditions in a rapid compression machine (RCM), and subsequent measurement of the ignition delay. However, even for relatively close thermal states at the compressed condition, different thermodynamic paths (pressure-temperature histories) may lead to significantly di

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