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Author : D. Baraldi
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (245 download)
Download or read book Numerical Simulation of Premixed Flame Propagation in a Channel with Two Obstacles written by D. Baraldi and published by . This book was released on 1997 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Norbert Peters
Publisher : Springer-Verlag
ISBN 13 : 3663140067
Total Pages : 211 pages
Book Rating : 4.6/5 (631 download)
Download or read book Numerical Methods in Laminar Flame Propagation written by Norbert Peters and published by Springer-Verlag. This book was released on 2013-11-21 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fabio Paravento
Publisher :
ISBN 13 : 9789064643156
Total Pages : 137 pages
Book Rating : 4.6/5 (431 download)
Download or read book Numerical Simulation of Premixed Flames Interacting with Obstacles written by Fabio Paravento and published by . This book was released on 2009 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kazuto Kuzuu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Numerical Simulation of Pre-mixed Flame Propagation in a Closed Tube written by Kazuto Kuzuu and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nedunchezhian Swaminathan
Publisher : Cambridge University Press
ISBN 13 : 1139498584
Total Pages : 447 pages
Book Rating : 4.1/5 (394 download)
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.
Author : Julian L. Hodgson
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (643 download)
Download or read book Numerical Simulation of the Propagation of Premixed Flames Without Vorticity Production written by Julian L. Hodgson and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas Arthur Richard Pinos
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (856 download)
Download or read book Combustion Wave Propagation Regimes in a Channel Equipped with an Array of Cross-flow Cylindrical Obstacles written by Thomas Arthur Richard Pinos and published by . This book was released on 2013 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flame propagation through a channel equipped with obstacles was studied experimentally. Two types of obstacle geometries were investigated, i.e., wall-mounted cross-flow cylinders and fence-type obstacles mounted on the top and bottom channel surfaces. The motivation for this research is its applications to both high-speed propulsion and industrial explosion safety. The effect of obstacle distribution and blockage ratio on flame acceleration was investigated in a 2.54cm x 7.6cm "narrow" channel with wall-mounted cross-flow cylindrical obstacles. The cylinders were arranged in a "staggered" or "inline" pattern, with blockage ratios of 0.5 and 0.67. Schlieren images were used to study the flame shape and its leading edge velocity for a range of fuel-air mixtures compositions. It was determined that initial flame propagation occurs faster in higher blockage ratios due to the higher frequency perturbation to the flow. Flame acceleration led to different quasi-steady flame and detonation propagation regimes. In general, higher final steady flame velocities were reached in the lower blockage ratios, and detonation limits were found to be influenced by the geometry. The influence of channel width on flame acceleration was also determined using fence-type obstacles with a single blockage ratio. Experiments were performed in a 2.54cm x 7.6cm and 7.6cm x 7.6cm channel. Schlieren images were again used to study the flame shape and to obtain leading edge velocity. The flame tip was found to have a parabolic profile across the channel width for the narrower channel and flatter profile in the wider channel. It was determined that the channel width has a weak effect on the flame velocity down the channel length. As such, flame acceleration was initially only slightly more pronounced in the narrow channel before the reverse became true later in the wide channel.
Author : Craig Thomas Johansen
Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.:/5 (444 download)
Download or read book Experimental and Numerical Investigation of Flame Acceleration in an Obstructed Channel written by Craig Thomas Johansen and published by . This book was released on 2009 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study is to experimentally and numerically investigate flame acceleration in an obstructed channel. The motivation for this research is for the development of Pulse Detonation Engines (PDEs), which are unsteady propulsion devices that utilize the detonative mode of combustion. A literature survey on flame acceleration in the context of PDEs is presented, which covers a wide range of combustion regimes including laminar combustion, turbulent combustion, and finally detonation. An overview of current numerical modeling strategies is also presented along with a selection of recent numerical studies focused on flame acceleration in obstructed channels. Experimentally, the effect of obstacle blockage ratio on flame acceleration was investigated in a modular channel. The channel had a square cross-section and obstacles were mounted onto the top and bottom surfaces. Schlieren images were used to study the flame shape and the centerline flame velocity. A novel visualization technique has been developed to study the unburned gas flow ahead of the flame front. Flame propagation at speeds above the speed of sound in the reactants was also studied as compression waves formed in the unburned gas. It was found that shock reflection from obstacle surfaces and subsequent flame interaction dominates flame acceleration at these higher flame speeds. The unburned gas flow field ahead of the flame front was simulated using Large Eddy Simulation (LES) and was compared to the visualization technique developed experimentally. The detailed unsteady calculation was used to further study the development of recirculation zones behind the obstacle surfaces and the generation of turbulence in the shear layers. The unburned gas flow field was investigated to give insight into the speed and shape of the flame as it propagates into these regions. Flame propagation was modeled using a flame surface density combustion model and simulations showed flame interactions with the turbulent flow field and how three-dimensional vortical structures augmented the flame shape and increase total area.
Author :
Publisher :
ISBN 13 :
Total Pages : 692 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gianmarco Pizza
Publisher :
ISBN 13 :
Total Pages : 203 pages
Book Rating : 4.:/5 (729 download)
Download or read book Numerical Simulation of Premixed Flame Dynamics in Catalytic and Non-catalytic Ducts written by Gianmarco Pizza and published by . This book was released on 2009 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Study of Flame Propagation in Semiconfined Geometries with Obstacles written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Accidents in which large quantities of liquefied natural gas (LNG) or other combustible materials are spilled can potentially lead to disastrous consequences, especially if the dispersing combustible cloud finds a suitable ignition source. So far, very little is known about the detailed behavior of a large burning cloud. Full-scale experiments are economically prohibitive, and therefore one must rely on laboratory and field experiments of smaller size, scaling up the results to make predictions about larger spill accidents. In this paper we describe our laboratory-scale experiments with a combustible propane/air mixture in various partially confined geometries. We summarize the experimental results and compare them with calculated results based on numerical simulations of the experiments. Our observations suggest that the geometry of the partial confinement is of primary importance; turbulence-producing obstacles can cause acceleration in the flame front and, more important, can cause a faster burnout of the combustible vapor.
Author : Thierry Poinsot
Publisher : R.T. Edwards, Inc.
ISBN 13 : 9781930217102
Total Pages : 544 pages
Book Rating : 4.2/5 (171 download)
Download or read book Theoretical and Numerical Combustion written by Thierry Poinsot and published by R.T. Edwards, Inc.. This book was released on 2005 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing numerical techniques for combustion, this textbook describes both laminar and turbulent flames, addresses the problem of flame-wall interaction, and presents a series of theoretical tools used to study the coupling phenomena between combustion and acoustics. The second edition incorporates recent advances in unsteady simulation methods,
Author : Christopher Cadou
Publisher : Momentum Press
ISBN 13 : 1606503081
Total Pages : 720 pages
Book Rating : 4.6/5 (65 download)
Download or read book Microscale Combustion and Power Generation written by Christopher Cadou and published by Momentum Press. This book was released on 2014-12-26 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in microfabrication technologies have enabled the development of entirely new classes of small-scale devices with applications in fields ranging from biomedicine, to wireless communication and computing, to reconnaissance, and to augmentation of human function. In many cases, however, what these devices can actually accomplish is limited by the low energy density of their energy storage and conversion systems. This breakthrough book brings together in one place the information necessary to develop the high energy density combustion-based power sources that will enable many of these devices to realize their full potential. Engineers and scientists working in energy-related fields will find: • An overview of the fundamental physics and phenomena of microscale combustion; • Presentations of the latest modeling and simulation techniques for gasphase and catalytic micro-reactors; • The latest results from experiments in small-scale liquid film, microtube, and porous combustors, micro-thrusters, and micro heat engines; • An assessment of the additional research necessary to develop compact and high energy density energy conversion systems that are truly practical.
Author : Paul Clavin
Publisher : Cambridge University Press
ISBN 13 : 1107098688
Total Pages : 723 pages
Book Rating : 4.1/5 (7 download)
Download or read book Combustion Waves and Fronts in Flows written by Paul Clavin and published by Cambridge University Press. This book was released on 2016-07-28 with total page 723 pages. Available in PDF, EPUB and Kindle. Book excerpt: A self-contained presentation of the dynamics of nonlinear waves in combustion and other non-equilibrium energetic systems for students and specialists.
Author : John R. Howell
Publisher : CRC Press
ISBN 13 : 1000257835
Total Pages : 967 pages
Book Rating : 4.0/5 (2 download)
Download or read book Thermal Radiation Heat Transfer written by John R. Howell and published by CRC Press. This book was released on 2020-12-10 with total page 967 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seventh edition of this classic text outlines the fundamental physical principles of thermal radiation, as well as analytical and numerical techniques for quantifying radiative transfer between surfaces and within participating media. The textbook includes newly expanded sections on surface properties, electromagnetic theory, scattering and absorption of particles, and near-field radiative transfer, and emphasizes the broader connections to thermodynamic principles. Sections on inverse analysis and Monte Carlo methods have been enhanced and updated to reflect current research developments, along with new material on manufacturing, renewable energy, climate change, building energy efficiency, and biomedical applications. Features: Offers full treatment of radiative transfer and radiation exchange in enclosures. Covers properties of surfaces and gaseous media, and radiative transfer equation development and solutions. Includes expanded coverage of inverse methods, electromagnetic theory, Monte Carlo methods, and scattering and absorption by particles. Features expanded coverage of near-field radiative transfer theory and applications. Discusses electromagnetic wave theory and how it is applied to thermal radiation transfer. This textbook is ideal for Professors and students involved in first-year or advanced graduate courses/modules in Radiative Heat Transfer in engineering programs. In addition, professional engineers, scientists and researchers working in heat transfer, energy engineering, aerospace and nuclear technology will find this an invaluable professional resource. Over 350 surface configuration factors are available online, many with online calculation capability. Online appendices provide information on related areas such as combustion, radiation in porous media, numerical methods, and biographies of important figures in the history of the field. A Solutions Manual is available for instructors adopting the text.
Author : Santanu De
Publisher : Springer
ISBN 13 : 9811074100
Total Pages : 663 pages
Book Rating : 4.8/5 (11 download)
Download or read book Modeling and Simulation of Turbulent Combustion written by Santanu De and published by Springer. This book was released on 2017-12-12 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive review of state-of-the-art models for turbulent combustion, with special emphasis on the theory, development and applications of combustion models in practical combustion systems. It simplifies the complex multi-scale and nonlinear interaction between chemistry and turbulence to allow a broader audience to understand the modeling and numerical simulations of turbulent combustion, which remains at the forefront of research due to its industrial relevance. Further, the book provides a holistic view by covering a diverse range of basic and advanced topics—from the fundamentals of turbulence–chemistry interactions, role of high-performance computing in combustion simulations, and optimization and reduction techniques for chemical kinetics, to state-of-the-art modeling strategies for turbulent premixed and nonpremixed combustion and their applications in engineering contexts.
Author :
Publisher :
ISBN 13 :
Total Pages : 400 pages
Book Rating : 4.3/5 (243 download)
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
