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Effect Of Varied Air Flow On Flame Structure Of Laminar Inverse Diffusion Flames
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Book Synopsis Effect of Varied Air Flow on Flame Structure of Laminar Inverse Diffusion Flames by : Mark Alexander Mikofski
Download or read book Effect of Varied Air Flow on Flame Structure of Laminar Inverse Diffusion Flames written by Mark Alexander Mikofski and published by . This book was released on 2004 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flame Structure and Soot Formation in Inverse Diffusion Flames by : Mark Alexander Mikofski
Download or read book Flame Structure and Soot Formation in Inverse Diffusion Flames written by Mark Alexander Mikofski and published by . This book was released on 2005 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diffusion Flames in the Laboratory by : John Barr
Download or read book Diffusion Flames in the Laboratory written by John Barr and published by . This book was released on 1954 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Diffusion Processes and Temperature on Smoking Tendencies of Laminar Diffusion Flames by : Rose L. Schalla
Download or read book Effect of Diffusion Processes and Temperature on Smoking Tendencies of Laminar Diffusion Flames written by Rose L. Schalla and published by . This book was released on 1953 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exergy for A Better Environment and Improved Sustainability 1 by : Fethi Aloui
Download or read book Exergy for A Better Environment and Improved Sustainability 1 written by Fethi Aloui and published by Springer. This book was released on 2018-08-04 with total page 1443 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multi-disciplinary book presents the most recent advances in exergy, energy, and environmental issues. Volume 1 focuses on fundamentals in the field and covers current problems, future needs, and prospects in the area of energy and environment from researchers worldwide. Based on selected lectures from the Seventh International Exergy, Energy and Environmental Symposium (IEEES7-2015) and complemented by further invited contributions, this comprehensive set of contributions promote the exchange of new ideas and techniques in energy conversion and conservation in order to exchange best practices in "energetic efficiency". Included are fundamental and historical coverage of the green transportation and sustainable mobility sectors, especially regarding the development of sustainable technologies for thermal comforts and green transportation vehicles. Furthermore, contributions on renewable and sustainable energy sources, strategies for energy production, and the carbon-free society constitute an important part of this book. Exergy for Better Environment and Sustainability, Volume 1 will appeal to researchers, students, and professionals within engineering and the renewable energy fields.
Book Synopsis Turbulent Premixed Flames by : Nedunchezhian Swaminathan
Download or read book Turbulent Premixed Flames written by Nedunchezhian Swaminathan and published by Cambridge University Press. This book was released on 2011-04-25 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: A work on turbulent premixed combustion is important because of increased concern about the environmental impact of combustion and the search for new combustion concepts and technologies. An improved understanding of lean fuel turbulent premixed flames must play a central role in the fundamental science of these new concepts. Lean premixed flames have the potential to offer ultra-low emission levels, but they are notoriously susceptible to combustion oscillations. Thus, sophisticated control measures are inevitably required. The editors' intent is to set out the modeling aspects in the field of turbulent premixed combustion. Good progress has been made on this topic, and this cohesive volume contains contributions from international experts on various subtopics of the lean premixed flame problem.
Book Synopsis Theories of Turbulent Combustion in High Speed Flows by : Paul A. Libby
Download or read book Theories of Turbulent Combustion in High Speed Flows written by Paul A. Libby and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781723397417 Total Pages :26 pages Book Rating :4.3/5 (974 download)
Book Synopsis Forced and Natural Convection in Laminar-Jet Diffusion Flames. [normal-Gravity, Inverted-Gravity and Zero-Gravity Flames] by : National Aeronautics and Space Administration (NASA)
Download or read book Forced and Natural Convection in Laminar-Jet Diffusion Flames. [normal-Gravity, Inverted-Gravity and Zero-Gravity Flames] written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-20 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation was conducted on methane, laminar-jet, diffusion flames with coaxial, forced-air flow to examine flame shapes in zero-gravity and in situations where buoyancy aids (normal-gravity flames) or hinders (inverted-gravity flames) the flow velocities. Fuel nozzles ranged in size from 0.051 to 0.305 cm inside radius, while the coaxial, convergent, air nozzle had a 1.4 cm inside radius at the fuel exit plane. Fuel flows ranged from 1.55 to 10.3 cu cm/sec and air flows from 0 to 597 cu cm/sec. A computer program developed under a previous government contract was used to calculate the characteristic dimensions of normal and zero-gravity flames only. The results include a comparison between the experimental data and the computed axial flame lengths for normal gravity and zero gravity which showed good agreement. Inverted-gravity flame width was correlated with the ratio of fuel nozzle radius to average fuel velocity. Flame extinguishment upon entry into weightlessness was studied, and it was found that relatively low forced-air velocities (approximately 10 cm/sec) are sufficient to sustain methane flame combustion in zero gravity. Flame color is also discussed. Haggard, J. B., Jr. Glenn Research Center NASA-TP-1841, E-487 RTOP 506-55-22
Book Synopsis Forced and Natural Convection in Laminar-jet Diffusion Flames by :
Download or read book Forced and Natural Convection in Laminar-jet Diffusion Flames written by and published by . This book was released on 1981 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structure of Confined Laminar Spray Diffusion Flames/numerical Investigation by : M. A. Mawid
Download or read book Structure of Confined Laminar Spray Diffusion Flames/numerical Investigation written by M. A. Mawid and published by . This book was released on 1993 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forced and Natural Convection in Laminar-Jet Diffusion Flames by : John B. Haggard
Download or read book Forced and Natural Convection in Laminar-Jet Diffusion Flames written by John B. Haggard and published by . This book was released on 1981 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Combustion, Flames and Explosions of Gases by : Bernard Lewis
Download or read book Combustion, Flames and Explosions of Gases written by Bernard Lewis and published by Academic Press. This book was released on 2013-10-22 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion, Flames, and Explosions of Gases, Second Edition focuses on the processes, methodologies, and reactions involved in combustion phenomena. The publication first offers information on theoretical foundations, reaction between hydrogen and oxygen, and reaction between carbon monoxide and oxygen. Discussions focus on the fundamentals of reaction kinetics, elementary and complex reactions in gases, thermal reaction, and combined hydrogen-carbon monoxide-oxygen reaction. The text then elaborates on the reaction between hydrocarbons and oxygen and combustion waves in laminar flow. The manuscript tackles combustion waves in turbulent flow and air entrainment and burning of jets of fuel gases. Topics include effect of turbulence spectrum and turbulent wrinkling on combustion wave propagation; ignition of high-velocity streams by hot solid bodies; burners with primary air entrainment; and description of jet flames. The book then takes a look at detonation waves in gases; emission spectra, ionization, and electric-field effects in flames; and methods of flame photography and pressure recording. The publication is a valuable reference for readers interested in combustion phenomena.
Book Synopsis On Flame Stability In The Hysteresis Regime In Co-Flow by :
Download or read book On Flame Stability In The Hysteresis Regime In Co-Flow written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study documents experiments performed on lifted turbulent diffusion flames in the hysteresis regime with air co-flow. Undiluted methane, ethylene, and propane were used as fuels and two nozzle sizes were used. The results confirm the non-linearity of the lift-off height with nozzle velocity, showing a previously undocumented region where lifted flame height increases as fuel velocity is decreased and that reattachment nozzle velocity varies linearly with co-flow. Using jet relations from Tieszen, the local excess jet velocity was computed and found to vary linearly for flames lifted well above the nozzle. The effect of co-flow was captured using an effective local excess jet velocity, similar to the effective nozzle jet velocity proposed by Montgomery used in conjunction with the results of Khalghatgi. Local excess jet velocities at the reattachment point were also compared for varying co-flow and found to be consistent between co-flow cases. This threshold velocity was found to vary with the inverse of the laminar burning velocity of the fuel squared. Relations for reattachment nozzle velocity and flame lift-off height at reattachment were also determined. The results extend the work of Khalghatgi into the hysteresis regime and complement the work of Gollahalli in determining the mechanisms that support flame stability in the hysteresis regime. Any comprehensive theory for flame stability will have to explain some of the unexpected results seen in the hysteresis regime and incorporate the findings of this study.
Book Synopsis Boundary-Layer Analyses of Differential-Diffusion Effects In Laminar Jet Diffusion Flames by : Akhil Nekkanti
Download or read book Boundary-Layer Analyses of Differential-Diffusion Effects In Laminar Jet Diffusion Flames written by Akhil Nekkanti and published by . This book was released on 2018 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical and numerical studies of laminar jet diffusion flames have been conducted in the limit of infinitely fast chemistry for unity oxygen Lewis number LO = 1, providing information on flame shapes and flame temperatures for different reactant-feed dilution, fuel Lewis number LF, and coflow-to-jet velocity ratios U0. Shvab-Zel'dovich coupling functions are used to write the conservation equations for planar and axisymmetric jet flames in the boundary-layer approximation. Specific consideration is given to the mixing-layer solution near the injector rim, where differential-diffusion effects are seen to result in the expected superadiabatic/subadiabatic temperature for LF smaller/larger than 1. These effects are more pronounced for U0 = 0 and at intermediate values of Zs. The evolution of the temperature along the flame is found to exhibit an unexpected behavior, in that irrespective of the dilution and coflow velocity the flame temperature always transitions from superadiabatic to subadiabatic when LF 1 and from subadiabatic to superadiabatic for LF 1. The variation with LF of the flame shape relative to the enthalpy eld is reasoned as the cause for the observed transition. Additional computations are performed for inverse diffusion flames with LO = 1 and LF ~= 1. These do not exhibit reversed differential-diffusion behaviors, indicating that the diffusivity of the abundant (co-flow) reactant is less critical than that of the deficient (central-jet) reactant.
Book Synopsis The Proceedings of 11th Asia-Oceania Symposium on Fire Science and Technology by : Guan-Yuan Wu
Download or read book The Proceedings of 11th Asia-Oceania Symposium on Fire Science and Technology written by Guan-Yuan Wu and published by Springer Nature. This book was released on 2019-09-12 with total page 1061 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book features selected papers from the 11th Asia-Oceania Symposium on Fire Science and Technology (AOSFST 2018), held in Taipei, Taiwan. Covering the entire spectrum of fire safety science, it focuses on research on fires, explosions, combustion science, heat transfer, fluid dynamics, risk analysis and structural engineering, as well as other topics. Presenting advanced scientific insights, the book introduces and advances new ideas in all areas of fire safety science. As such it is a valuable resource for academic researchers, fire safety engineers, and regulators of fire, construction and safety authorities. Further it provides new ideas for more efficient fire protection.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722457822 Total Pages :26 pages Book Rating :4.4/5 (578 download)
Book Synopsis On the Structure of Gaseous Confined Laminar Diffusion Flames by : National Aeronautics and Space Administration (NASA)
Download or read book On the Structure of Gaseous Confined Laminar Diffusion Flames written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-09 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The structure and characteristics of gaseous confined laminar diffusion flames are investigated by numerically solving the time-dependent two-dimensional axisymmetric conservation equations. The numerical model accounts for the important chemical and physical processes involved, including axial diffusion, viscous effects, radial convection, and finite-rate chemistry. The numerical results clearly show that the flame has a finite thickness and leakage of fuel vapor into the flame zone is possible. The effect of heat release is found to induce some radial flow. Predicted flame shape and dimensions are compared to the classical Burke-Schumann flame. The numerically calculated flame is observed to be about 15 percent taller and 5 percent narrower than that of the Burke-Schumann solution under the same conditions. Mawid, M. A. and Bulzan, D. L. and Aggarwal, S. K. Glenn Research Center RTOP 505-62-21...
Book Synopsis Turbulent Combustion by : Norbert Peters
Download or read book Turbulent Combustion written by Norbert Peters and published by Cambridge University Press. This book was released on 2000-08-15 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: The combustion of fossil fuels remains a key technology for the foreseeable future. It is therefore important that we understand the mechanisms of combustion and, in particular, the role of turbulence within this process. Combustion always takes place within a turbulent flow field for two reasons: turbulence increases the mixing process and enhances combustion, but at the same time combustion releases heat which generates flow instability through buoyancy, thus enhancing the transition to turbulence. The four chapters of this book present a thorough introduction to the field of turbulent combustion. After an overview of modeling approaches, the three remaining chapters consider the three distinct cases of premixed, non-premixed, and partially premixed combustion, respectively. This book will be of value to researchers and students of engineering and applied mathematics by demonstrating the current theories of turbulent combustion within a unified presentation of the field.
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