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Experimental Observations Of Methane Oxygen Flame Structures In Alumina Non Premixed Sub Millimeter Burners
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Book Synopsis Experimental Observations of Methane-oxygen Flame Structures in Alumina Non-premixed Sub-millimeter Burners by : Adrian Daniel Armijo
Download or read book Experimental Observations of Methane-oxygen Flame Structures in Alumina Non-premixed Sub-millimeter Burners written by Adrian Daniel Armijo and published by . This book was released on 2006 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Study of Burner Geometry Effect on the Coherent Structures, Flashback, and Flame Front Dynamics of Unconfined and Confined Partially Premixed Swirling Methane Flames by : Mahmoud M.A. Ahmed
Download or read book Experimental Study of Burner Geometry Effect on the Coherent Structures, Flashback, and Flame Front Dynamics of Unconfined and Confined Partially Premixed Swirling Methane Flames written by Mahmoud M.A. Ahmed and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of burner geometry (central fuel nozzle, mixing tube length, and flame confinement) on the ensuing flowfield's coherent structures (precessing vortex core and vortex shedding) and their relationship with some combustion stability parameters, such as flashback and flame front dynamics of a swirling partially premixed methane flame, is experimentally studied. In this investigation, several measurement techniques are employed. These include particle image velocimetry (PIV), Mie scattering, laser Doppler velocimetry (LDV), Bruel & Kjaer microphone, high-speed Schlieren imaging technique, and high-speed luminescence imaging. In addition, proper orthogonal decomposition (POD) is used as a post processing technique to capture the flow-field coherent structures. In the first part of the study, the effect of central nozzle geometry on coherent structures' strength and frequency is examined inside a relatively long mixing tube. Furthermore, the relationship between the strength and frequency of coherent structures and the mean flashback region inside the mixing tube is studied. In the second part, the central nozzle geometry is modified based on the conclusions reached in the first part of the study, and its effect on the suppression of the coherent structures is investigated using a relatively short mixing length. Finally, the effect of nozzle geometries, which exhibit the highest and lowest coherent structures' amplitude, on coherent structures and acoustics modes is studied using different mixing tube lengths in the presence of a flame confinement. The results showed that the central nozzle geometry significantly affects coherent structures' strength and amplitude inside the mixing tube. Moreover, the results revealed a strong relationship between coherent structures' strength and the mean flashback region inside the mixing tube. Furthermore, the central nozzle geometry is found to significantly affect the amplitude of coherent structures for both confined and unconfined swirling partial premixed flames, and acoustics for the confined flames. All in all, it can be concluded that passive techniques can be a viable strategy for mitigating combustion instabilities of partially premixed flames.
Book Synopsis Experimental Investigation of the Dynamics and Structure of Lean-premixed Turbulent Combustion by : Frank Tat Cheong Yuen
Download or read book Experimental Investigation of the Dynamics and Structure of Lean-premixed Turbulent Combustion written by Frank Tat Cheong Yuen and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulent premixed propane/air and methane/air flames were studied using planar Rayleigh scattering and particle image velocimetry on a stabilized Bunsen type burner. The fuel-air equivalence ratio was varied from & phis; = 0:7 to 1.0 for propane flames, and from & phis; = 0:6 to 1.0 for methane flames. The non-dimensional turbulence intensity, u'/ SL (ratio of fluctuation velocity to laminar burning velocity), covered the range from 3 to 24, equivalent to conditions of corrugated flamelets and thin reaction zones regimes. Temperature gradients decreased with the increasing u'/SL and levelled off beyond u'/SL> 10 for both propane and methane flames. Flame front thickness increased slightly as u'/SL increased for both mixtures, although the thickness increase was more noticeable for propane flames, which meant the thermal flame front structure was being thickened. A zone of higher temperature was observed on the average temperature profile in the preheat zone of the flame front as well as some instantaneous temperature profiles at the highest u'/SL. Curvature probability density functions were similar to the Gaussian distribution at all u'/ SL for both mixtures and for all the flame sections. The mean curvature values decreased as a function of u'/ SL and approached zero. Flame front thickness was smaller when evaluated at flame front locations with zero curvature than that with curvature. Temperature gradients and FSD were larger when the flame curvature was zero. The combined thickness and FSD data suggest that the curvature effect is more dominant than that of the stretch by turbulent eddies during flame propagation. Integrated flame surface density for both propane and methane flames exhibited no dependance on u'/S L regardless of the FSD method used for evaluation. This observation implies that flame surface area may not be the dominant factor in increasing the turbulent burning velocity and the flamelet assumption may not be valid under the conditions studied. Dkappa term, the product of diffusivity evaluated at conditions studied and the flame front curvature, was a magnitude smaller than or the same magnitude as the laminar burning velocity.
Book Synopsis Methane-oxygen Flame Structure. Conservation of Matter and Energy in the One-tenth Atmosphere Flame by : A. A. WESTENBERG
Download or read book Methane-oxygen Flame Structure. Conservation of Matter and Energy in the One-tenth Atmosphere Flame written by A. A. WESTENBERG and published by . This book was released on 1960 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Premixed Methane Stagnation Flames with Oxygen Enrichment by : Sean D. Salusbury
Download or read book Premixed Methane Stagnation Flames with Oxygen Enrichment written by Sean D. Salusbury and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Gallery of Combustion and Fire by : Charles E. Baukal, Jr.
Download or read book A Gallery of Combustion and Fire written by Charles E. Baukal, Jr. and published by Cambridge University Press. This book was released on 2020-09-03 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Gallery of Combustion and Fire is the first book to provide a graphical perspective of the extremely visual phenomenon of combustion in full color. It is designed primarily to be used in parallel with, and supplement existing combustion textbooks that are usually in black and white, making it a challenge to visualize such a graphic phenomenon. Each image includes a description of how it was generated, which is detailed enough for the expert but simple enough for the novice. Processes range from small scale academic flames up to full scale industrial flames under a wide range of conditions such as low and normal gravity, atmospheric to high pressures, actual and simulated flames, and controlled and uncontrolled flames. Containing over 500 color images, with over 230 contributors from over 75 organizations, this volume is a valuable asset for experts and novices alike.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Diagnostics for Combustion Temperature and Species by : Alan C. Eckbreth
Download or read book Laser Diagnostics for Combustion Temperature and Species written by Alan C. Eckbreth and published by CRC Press. This book was released on 1996-10-10 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on spectroscopically-based, spatially-precise, laser techniques for temperature and chemical composition measurements in reacting and non-reacting flows, this book makes these powerful and important new tools in combustion research
Download or read book Methane Conversion written by D.M. Bibby and published by Elsevier. This book was released on 1988-03-01 with total page 759 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume comprises the invited plenary lectures, contributed and poster papers presented at a symposium organised to mark the successful inauguration of the world's first commercial plant for production of gasoline from natural gas, based on the Mobil methanol-to-gasoline process. The objectives of the Symposium were to present both fundamental research and engineering aspects of the development and commercialization of gas-to-gasoline processes. These include steam reforming, methanol synthesis and methanol-to-gasoline. Possible alternative processes e.g. MOGD, Fischer-Tropsch synthesis of hydrocarbons, and the direct conversion of methane to higher hydrocarbons were also considered.The papers in this volume provide a valuable and extremely wide-ranging overview of current research into the various options for natural gas conversion, giving a detailed description of the gas-to-gasoline process and plant. Together, they represent a unique combination of fundamental surface chemistry catalyst characterization, reaction chemistry and engineering scale-up and commercialization.
Book Synopsis Publications of the National Institute of Standards and Technology ... Catalog by : National Institute of Standards and Technology (U.S.)
Download or read book Publications of the National Institute of Standards and Technology ... Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1991 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flashback Mechanisms in Lean Premixed Gas Turbine Combustion by : Ali Cemal Benim
Download or read book Flashback Mechanisms in Lean Premixed Gas Turbine Combustion written by Ali Cemal Benim and published by Academic Press. This book was released on 2014-12-01 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Blending fuels with hydrogen offers the potential to reduce NOx and CO2 emissions in gas turbines, but doing so introduces potential new problems such as flashback. Flashback can lead to thermal overload and destruction of hardware in the turbine engine, with potentially expensive consequences. The little research on flashback that is available is fragmented. Flashback Mechanisms in Lean Premixed Gas Turbine Combustion by Ali Cemal Benim will address not only the overall issue of the flashback phenomenon, but also the issue of fragmented and incomplete research. Presents a coherent review of flame flashback (a classic problem in premixed combustion) and its connection with the growing trend of popularity of more-efficient hydrogen-blend fuels Begins with a brief review of industrial gas turbine combustion technology Covers current environmental and economic motivations for replacing natural gas with hydrogen-blend fuels
Book Synopsis Industrial Burners Handbook by : Jr., Charles E. Baukal
Download or read book Industrial Burners Handbook written by Jr., Charles E. Baukal and published by CRC Press. This book was released on 2003-10-29 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid development in the field precipitated by the increased demand for clean burner systems has made the Industrial Burners Handbook into the fields go-to resource. With this resource, bestselling author, editor, and combustion expert Charles Baukal, Jr. has put together a comprehensive reference dedicated to the design and applications of indust
Book Synopsis High Temperature Air Combustion by : Hiroshi Tsuji
Download or read book High Temperature Air Combustion written by Hiroshi Tsuji and published by CRC Press. This book was released on 2002-12-03 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maximize efficiency and minimize pollution: the breakthrough technology of high temperature air combustion (HiTAC) holds the potential to overcome the limitations of conventional combustion and allow engineers to finally meet this long-standing imperative. Research has shown that HiTAC technology can provide simultaneous reduction of CO2 and nitric
Book Synopsis Emerging Technologies and Techniques in Porous Media by : Derek B. Ingham
Download or read book Emerging Technologies and Techniques in Porous Media written by Derek B. Ingham and published by Springer Science & Business Media. This book was released on 2004-02-29 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of heat and fluid flow in fluid-saturated porous media is applicable in a very wide range of fields, with practical applications in modern industry and environmental areas, such as nuclear waste management, the construction of thermal insulators, geothermal power, grain storage and many more. The vast amount of theoretical and experimental work reported has attracted the attention of industrialists, engineers, applied mathematicians, chemical, civil, environmental, mechanical and nuclear engineers, physicists, food scientists, medical researchers, etc. This book covers the full range of theoretical, computational and experimental approaches to the subject, grouped into reviews of: fundamentals, stability, anisotropy, permeability and non-equilibrium, applications, and experimental porous media.
Book Synopsis Industrial Combustion Pollution and Control by : Jr., Charles E. Baukal
Download or read book Industrial Combustion Pollution and Control written by Jr., Charles E. Baukal and published by CRC Press. This book was released on 2003-10-15 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference overflows with an abundance of experimental techniques, simulation strategies, and practical applications useful in the control of pollutants generated by combustion processes in the metals, minerals, chemical, petrochemical, waste, incineration, paper, glass, and foods industries. The book assists engineers as they attempt to meet e
Book Synopsis Combustion Engineering by : Kenneth W. Ragland
Download or read book Combustion Engineering written by Kenneth W. Ragland and published by CRC Press. This book was released on 2011-05-06 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion Engineering, Second Edition maintains the same goal as the original: to present the fundamentals of combustion science with application to today's energy challenges. Using combustion applications to reinforce the fundamentals of combustion science, this text provides a uniquely accessible introduction to combustion for undergraduate stud
