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Toward Detonation Theory
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Book Synopsis Toward Detonation Theory by : Anatoly N. Dremin
Download or read book Toward Detonation Theory written by Anatoly N. Dremin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is known that the Chapman-Jouguet theory of detonation is based on the assumption of an instantaneous and complete transformation of explosives into detonation products in the wave front. Therefore, one should not expect from the theory any interpretations of the detonation limits, such as shock initiation of det onation and kinetic instability and propagation (failure diameter). The Zeldovich-Von Neuman-Doring (ZND) theory of detonation appeared, in fact, as a response to the need for a theory capable of interpreting such limits, and the ZND detonation theory gave qualitative interpretations to the detonation limits. These interpretations were based essentially on the theoretical notion that the mechanism of explosives transformation at detonation is a combustion of a layer of finite thickness of shock-compressed explosive behind the wave shock front with the velocity of the front. However, some experimental findings turned out to be inconsistent with the the ory. A very small change of homogeneous (liquid) explosives detonation velocity with explosive charge diameter near the rather sizable failure diameter is one of the findings. The elucidation of the nature of this finding has led to the discovery of a new phenomenon. This phenomenon has come to be known as the breakdown (BD) of the explosive self-ignition behind the front of shock waves under the effect of rarefaction waves.
Book Synopsis Introduction to Detonation Theory by : Wildon Fickett
Download or read book Introduction to Detonation Theory written by Wildon Fickett and published by Univ of California Press. This book was released on 2022-08-19 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1985.
Download or read book Detonation written by Wildon Fickett and published by Courier Corporation. This book was released on 2012-08-29 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive review of detonation explores the "simple theory" and experimental tests of the theory; flow in a reactive medium; steady detonation; the nonsteady solution; and the structure of the detonation front. 1979 edition.
Book Synopsis Lectures on Detonation Physics by : D. Scott Stewart
Download or read book Lectures on Detonation Physics written by D. Scott Stewart and published by . This book was released on 1993 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gaseous Detonations by : M.A. Nettleton
Download or read book Gaseous Detonations written by M.A. Nettleton and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: My introduction to the fascinating phenomena associated with detonation waves came through appointments as an external fellow at the Department of Physics, University College of Wales, and at the Department of Mechanical Engineering, University of Leeds. Very special thanks for his accurate guidance through the large body of information on gaseous detonations are due to Professor D. H. Edwards of University College of Wales. Indeed, the onerous task of concisely enumerating the key features of unidimensional theories of detonations was undertaken by him, and Chapter 2 is based on his initial draft. When the text strays to the use of we, it is a deserved acknow ledgement of his contribution. Again, I should like to thank Professor D. Bradley of Leeds University for his enthusiastic encouragement of my efforts at developing a model of the composition limits of detonability through a relationship between run-up distance and composition of the mixture. The text has been prepared in the context of these fellowships, and I am grateful to the Central Electricity Generating Board for its permission to accept these appointments.
Download or read book Frontiers of Detonation Theory written by and published by . This book was released on 1994 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detonation theory is far from complete for many reasons. As on example, although it can be used to predict performance of explosives, it does not serve to predict effective reaction zone lengths. The flow is not smooth and laminar, but violently multi-dimensional on a small scale, and small hot spots produced by the flow localize the initial part of the chemical reaction, and influence its evolution. The present inability to model these phenomena not only prevents needed predictions, but also prevents the use of detonation experiments for studying chemistry in a region of state space not attainable in the usual laboratory. The underlying difficulty in these and other cases where the mechanics and the chemistry interact arises because of the large number of disparate space and time scales in detonation problems.
Book Synopsis Gaseous Detonation Physics and Its Universal Framework Theory by : Zonglin Jiang
Download or read book Gaseous Detonation Physics and Its Universal Framework Theory written by Zonglin Jiang and published by Springer Nature. This book was released on 2022-12-16 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the theories and research progress in gaseous detonation research, and proposes a universal framework theory that overcomes the current research limitations. Gaseous detonation is an extremely fast type of combustion that propagates at supersonic speed in premixed combustible gas. Being self-sustaining and self-organizing with the unique nature of pressure gaining, gaseous detonation and its gas dynamics has been an interdisciplinary frontier for decades. The research of detonation enjoyed its early success from the development of the CJ theory and ZND modeling, but phenomenon is far from being understood quantitatively, and the development of theories to predict the three-dimensional cellular structure remains a formidable task, being essentially a problem in high-speed compressible reacting flow. This theory proposed by the authors’ research group breaks down the limitation of the one-dimensional steady flow hypothesis of the early theories, successfully correlating the propagation and initiation processes of gaseous detonation, and realizing the unified expression of the three-dimensional structure of cell detonation. The book and the proposed open framework is of high value for researchers in conventional applications such as coal mine explosions and chemical plant accidents, and state-of-the-art research fields such as supernova explosion, new aerospace propulsion engines, and detonation-driven hypersonic testing facilities. It is also a driving force for future research of detonation.
Book Synopsis On the Theory of the Propagation of Detonation in Gaseous Systems by : Y. B. Zeldovich
Download or read book On the Theory of the Propagation of Detonation in Gaseous Systems written by Y. B. Zeldovich and published by . This book was released on 1950 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The existing theory of detonation is critically examined. It is shown that the considerations with which the steady value of the velocity of detonation is chosen are not convincing. In connection with the problem of the process of the chemical reaction in a detonation wave, the objections raised against the conceptions of Le Chatelier and Vieille of the 19th century with regard to the ignition of the gas by the shock wave are refuted. On the basis of this concept, it is possible to give a rigorous foundation for the existing method of computing the detonation velocity. The distributions of the temperature, the pressure, and the velocity in the detonation wave front as the chemical reaction proceeds, are considered. On the assumption of the absence of losses, the pure compression of the gas in the shock wave at the start of the chemical reaction develops a temperature that is near the temperature of combustion of the given mixture at constant pressure.
Book Synopsis The Detonation Phenomenon by : John H. S. Lee
Download or read book The Detonation Phenomenon written by John H. S. Lee and published by Cambridge University Press. This book was released on 2008-06-30 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the detonation phenomenon in explosives. It is ideal for engineers and graduate students with a background in thermodynamics and fluid mechanics. The material is mostly qualitative, aiming to illustrate the physical aspects of the phenomenon. Classical idealized theories of detonation waves are presented first. These permit detonation speed, gas properties ahead of and behind the detonation wave, and the distribution of fluid properties within the detonation wave itself to be determined. Subsequent chapters describe in detail the real unstable structure of a detonation wave. One-, two-, and three-dimensional computer simulations are presented along with experimental results using various experimental techniques. The important effects of confinement and boundary conditions and their influence on the propagation of a detonation are also discussed. The final chapters cover the various ways detonation waves can be formed and provide a review of the outstanding problems and future directions in detonation research.
Book Synopsis On the Theory of the Propagation of Detonation in Gaseous Systems by : Y. B. Zeldovich
Download or read book On the Theory of the Propagation of Detonation in Gaseous Systems written by Y. B. Zeldovich and published by . This book was released on 1950 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The existing theory of detonation is critically examined. It is shown that the considerations with which the steady value of the velocity of detonation is chosen are not convincing. In connection with the problem of the process of the chemical reaction in a detonation wave, the objections raised against the conceptions of Le Chatelier and Vieille of the 19th century with regard to the ignition of the gas by the shock wave are refuted. On the basis of this concept, it is possible to give a rigorous foundation for the existing method of computing the detonation velocity. The distributions of the temperature, the pressure, and the velocity in the detonation wave front as the chemical reaction proceeds, are considered. On the assumption of the absence of losses, the pure compression of the gas in the shock wave at the start of the chemical reaction develops a temperature that is near the temperature of combustion of the given mixture at constant pressure.
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 Approches Microscopique Et Macroscopique Des Détonations by : S. Odiot
Download or read book Approches Microscopique Et Macroscopique Des Détonations written by S. Odiot and published by . This book was released on 1995 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microscopic Theory of Detonation in Solids by : C. E. Melton
Download or read book Microscopic Theory of Detonation in Solids written by C. E. Melton and published by . This book was released on 1969 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detonation theory based on a microscopic model of a solid has been developed. This was accomplished by considering known physical and chemical properties of the individual molecules in the system. The results show that molecular vibrational energies, normal lattice frequencies and activation energies are the most important parameters in the model. Molecules having low vibrational energies are easier to detonate, according to the theory, because of the ease of creation of a population inversion or 'hot spot' in the system. A 'perfect crystal' would be more difficult to detonate because initiation would occur at one of the faces. However, the model shows that perfect crystals of unstable solids cannot be grown. Consequently, detonation in any real crystal will be initiated in the interior near a defect. The present model explains many experimental observations that cannot be explained on the basis of older theories of detonation. For example, the microscopic theory can easily explain the occurrence of explosions during growth of crystals from solutions. (Author).
Book Synopsis Theory of Detonation by : I︠A︡kov Borisovich Zelʹdovich
Download or read book Theory of Detonation written by I︠A︡kov Borisovich Zelʹdovich and published by . This book was released on 1960 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Remarks on the Mathematical Theory of Detonation and Deflagration Waves in Gases by : Richard Courant
Download or read book Remarks on the Mathematical Theory of Detonation and Deflagration Waves in Gases written by Richard Courant and published by Sagwan Press. This book was released on 2018-02-08 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Book Synopsis Handbook of Shock Waves by : Gabi Ben-Dor
Download or read book Handbook of Shock Waves written by Gabi Ben-Dor and published by Academic Press. This book was released on 2001-01-01 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Introduction to Simple Shock Waves in Air by : Seán Prunty
Download or read book Introduction to Simple Shock Waves in Air written by Seán Prunty and published by Springer Nature. This book was released on 2021-01-22 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an elementary introduction to one-dimensional fluid flow problems involving shock waves in air. The differential equations of fluid flow are approximated by finite difference equations and these in turn are numerically integrated in a stepwise manner, with artificial viscosity introduced into the numerical calculations in order to deal with shocks. This treatment of the subject is focused on the finite-difference approach to solve the coupled differential equations of fluid flow and presents the results arising from the numerical solution using Mathcad programming. Both plane and spherical shock waves are discussed with particular emphasis on very strong explosive shocks in air. This expanded second edition features substantial new material on sound wave parameters, Riemann's method for numerical integration of the equations of motion, approximate analytical expressions for weak shock waves, short duration piston motion, numerical results for shock wave interactions, and new appendices on the piston withdrawal problem and numerical results for a closed shock tube. This text will appeal to students, researchers, and professionals in shock wave research and related fields. Students in particular will appreciate the benefits of numerical methods in fluid mechanics and the level of presentation.
