Download or read book Initiation of detonation resulting from a collision of a shock wave with obstacles written by C. K. Chan and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Initiation of detonation resulting from a collision of a shock wave with an orifice written by C. K. Chan and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shock Wave Science and Technology Reference Library Vol 3 written by Yasuyuki Horie and published by Springer Science & Business Media. This book was released on 2008-09-18 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the second volume of Solids Volumes in theShockWaveScience and Technology Reference Library. These volumes are primarily concerned with high-pressure shock waves in solid media, including detonation and hi- velocity impact and penetration events. This volume contains four articles. The ?rst two describe the reactive behavior of condensed-phase explosives, and the remaining two discuss the inert, mechanical response of solid materials. The articles are each se- contained, and can be read independently of each other. They o?er a timely reference, for beginners as well as professional scientists and engineers, cov- ing the foundations and the latest progress, and include burgeoning devel- ment as well as challenging unsolved problems. The ?rst chapter, by S. She?eld and R. Engelke, discusses the shock initiation and detonation phenomena of solids explosives. The article is an outgrowth of two previous review articles: “Explosives” in vol. 6 of En- clopedia of Applied Physics (VCH, 1993) and “Initiation and Propagation of Detonation in Condensed-Phase High Explosives” in High-Pressure Shock Compression of Solids III (Springer, 1998). This article is not only an - dated review, but also o?ers a concise heuristic introduction to shock waves and condensed-phase detonation. The authors emphasize the point that d- onation is not an uncontrollable, chaotic event, but that it is an orderly event that is governed by and is describable in terms of the conservation of mass, momentum, energy and certain material-speci?c properties of the explosive.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1971 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detonation Initiation in a Hot Jet and by Colliding Fragments written by Egil Borse and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report describes three phases with experimental observations and theoretical evaluations related to the initiation of detonation in a hot jet caused by the jet itself or by colliding fragments. The report is based upon an evaluation of accidental explosions where initiations of detonations in actual past accidents seem to be connected with the existence of a local constant volume combustion process inside a vapour cloud. There exist two plausible mechanisms for the initiation of detonation -- one is based upon the existence of a radical gradient in a hot jet, which during the initiation process amplifies the process by e.g. the SWACER mechanism through a critical length or volume until a self-sustained detonation wave is formed. -- the other mechanism is that a constant volume combustion (which produces the hot jet) causes metal to fragment and that the collisions between fragments or a wall produces a shock wave strong enough to initiate a detonation. Phase 1 and 2 of this report show that the first mechanism needs one additional factor: either a large scale vortex (phase 2) or the production of a Mach-Stem by merging two or more "low strength" shocks (phase 1). Phase 1 shows through streak and single spark Schlieren photography the most common mechanisms of detonation initiation. Phase 1 also gives additional evidence of the quenching characteristics of a detonation wave. Phase 2 gives evidence of the increased flame velocity in a hot jet and the formation of vortices by use of single spark Schlieren photography and pressure readings. The results from phase 2 indicate that the production of vortices is only secondary in the initiation of detonation in a hot jet; the vortices must only be of a particular size. The discussion in phase 1 shows that the production of Mach-Stem by merging two or more "low strength" shocks might be the prime mechanism of initiation in addition to a mechanism which could well be the SWACER mechanism. Phase 3 shows that detonation initiation caused by colliding fragments might be possible and is a more plausible explanation of past accidents involving initiation of detonation than the above mechanisms. That the pressure build-up is close to the natural frequency of diaphragm seems to be a necessary condition for initiation of detonation in the experimental apparatus used in phase 3. This might explain why detonation initiation in accidental gas explosions only occurs in relation to a constant volume combustion (explosion), but even then, only occasionally. A final theory of detonation initiation by e.g. a static electric discharge initiation a series of vortices building up a system of wavelets, is suggested. The wavelets discussed in phase 1 and the turbulence discussed as secondary to the wavelets in phase 2 might then form a process which is similar to the Swacer mechanism in theory, but not in the physics. There is no final evidence whether this process also is acting in phase 3, with or without help from the fragmentation. A static electric discharge might compete with the fragmentation theory in phase 3, or the shock reflection theory in phase 1, in explaining past accidents
Download or read book Shock Waves Science and Technology Library Vol 6 written by F. Zhang and published by Springer Science & Business Media. This book was released on 2012-03-28 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, as a volume of the Shock Wave Science and Technology Reference Library, is primarily concerned with the fundamental theory of detonation physics in gaseous and condensed phase reactive media. The detonation process involves complex chemical reaction and fluid dynamics, accompanied by intricate effects of heat, light, electricity and magnetism - a contemporary research field that has found wide applications in propulsion and power, hazard prevention as well as military engineering. The seven extensive chapters contained in this volume are: - Chemical Equilibrium Detonation (S Bastea and LE Fried) - Steady One-Dimensional Detonations (A Higgins) - Detonation Instability (HD Ng and F Zhang) - Dynamic Parameters of Detonation (AA Vasiliev) - Multi-Scaled Cellular Detonation (D Desbordes and HN Presles) - Condensed Matter Detonation: Theory and Practice (C Tarver) - Theory of Detonation Shock Dynamics (JB Bdzil and DS Stewart) The chapters are thematically interrelated in a systematic descriptive approach, though, each chapter is self-contained and can be read independently from the others. It offers a timely reference of theoretical detonation physics for graduate students as well as professional scientists and engineers.
Download or read book Explosion Shock Waves and High Strain Rate Phenomena written by K. Hokamoto and published by Materials Research Forum LLC. This book was released on 2019-08-20 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents the papers presented at the 6th international conference on Explosion, Shock Wave and High Strain-Rate Phenomena (ESHP). Topics covered include: Advanced Manufacturing under Impact/Shock Loading, Detonation of High Pressure Flammable Gas in Closed Spaces, High Strain-Rate Behaviour of Auxetic Cellular Structures, Underwater Shock Waves Generation, Magnetic Pressure Welding of Aluminum Sheets, Shock Synthesis of Zirconium Oxides, Impact Joining of Dissimilar Metals, High-Speed Oblique Collision of Metals, Dynamic Behavior of Dislocation Wall Structures, Tensile Strength of Rock at High Strain Rates, Fiber Reinforced Mortar, Impact Analysis of Carbon Fiber Reinforced Polymer, Explosive Welding , Underwater Explosive Welding , Making Ultrafine Explosives, Aluminum-Steel Explosive Cladding, Explosively Cladded Aluminum Hybrid Composites, Explosive Clads with Interlayers.
Download or read book Shock Wave Science and Technology Reference Library Vol 4 written by F. Zhang and published by Springer Science & Business Media. This book was released on 2009-06-12 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth of several volumes on solids in this series, the six extensive chapters here are more specifically concerned with detonation and shock compression waves in reactive heterogeneous media, including mixtures of solid, liquid and gas phases.
Download or read book Hydrodynamics of Explosion written by Valery K. Kedrinskiy and published by Springer Science & Business Media. This book was released on 2005-11-04 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydronamics of Explosion presents the research results for the problems of underwater explosions and contains a detailed analysis of the structure and the parameters of the wave fields generated by explosions of cord and spiral charges, a description of the formation mechanisms for a wide range of cumulative flows at underwater explosions near the free surface, and the relevant mathematical models. Shock-wave transformation in bubbly liquids, shock-wave amplification due to collision and focusing, and the formation of bubble detonation waves in reactive bubbly liquids are studied in detail. Particular emphasis is placed on the investigation of wave processes in cavitating liquids, which incorporates the concepts of the strength of real liquids containing natural microinhomogeneities, the relaxation of tensile stress, and the cavitation fracture of a liquid as the inversion of its two-phase state under impulsive (explosive) loading. The problems are classed among essentially nonlinear processes that occur under shock loading of liquids and may be of interest to researchers in physical acoustics, mechanics of multiphase media, shock-wave processes in condensed media, explosive hydroacoustics, and cumulation.
Download or read book 30th International Symposium on Shock Waves 2 written by Gabi Ben-Dor and published by Springer. This book was released on 2017-08-01 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings collect the papers presented at the 30th International Symposium on Shock Waves (ISSW30), which was held in Tel-Aviv Israel from July 19 to July 24, 2015. The Symposium was organized by Ortra Ltd. The ISSW30 focused on the state of knowledge of the following areas: Nozzle Flow, Supersonic and Hypersonic Flows with Shocks, Supersonic Jets, Chemical Kinetics, Chemical Reacting Flows, Detonation, Combustion, Ignition, Shock Wave Reflection and Interaction, Shock Wave Interaction with Obstacles, Shock Wave Interaction with Porous Media, Shock Wave Interaction with Granular Media, Shock Wave Interaction with Dusty Media, Plasma, Magnetohyrdrodynamics, Re-entry to Earth Atmosphere, Shock Waves in Rarefied Gases, Shock Waves in Condensed Matter (Solids and Liquids), Shock Waves in Dense Gases, Shock Wave Focusing, Richtmyer-Meshkov Instability, Shock Boundary Layer Interaction, Multiphase Flow, Blast Waves, Facilities, Flow Visualization, and Numerical Methods. The two volumes serve as a reference for the participants of the ISSW30 and anyone interested in these fields.
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.
Download or read book Shock and Detonation Waves written by John G. Kirkwood and published by Taylor & Francis Group. This book was released on 1968 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Belle Meader Collection written by and published by . This book was released on 1860 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current Topics in Shock Waves written by Yong W. Kim and published by American Institute of Physics. This book was released on 1990 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 28th International Symposium on Shock Waves written by Konstantinos Kontis and published by Springer Science & Business Media. This book was released on 2012-03-14 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: The University of Manchester hosted the 28th International Symposium on Shock Waves between 17 and 22 July 2011. The International Symposium on Shock Waves first took place in 1957 in Boston and has since become an internationally acclaimed series of meetings for the wider Shock Wave Community. The ISSW28 focused on the following areas: Blast Waves, Chemically Reacting Flows, Dense Gases and Rarefied Flows, Detonation and Combustion, Diagnostics, Facilities, Flow Visualisation, Hypersonic Flow, Ignition, Impact and Compaction, Multiphase Flow, Nozzle Flow, Numerical Methods, Propulsion, Richtmyer-Meshkov, Shockwave Boundary Layer Interaction, Shock Propagation and Reflection, Shock Vortex Interaction, Shockwave Phenomena and Applications, as well as Medical and Biological Applications. The two Volumes contain the papers presented at the symposium and serve as a reference for the participants of the ISSW 28 and individuals interested in these fields.
Download or read book Propagation of Two Dimensional Nonsteady Detonation in a Channel with Backward Facing Step written by T. Sugimura and published by . This book was released on 1981 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Re-establishment or quenching of a detonation at a corner is conceivably caused by the interaction of numerous triple shock waves contained in the frontal structure of the detonation; a combined effect of Prandtl-Meyer expansion and the disappearance of collision partner triple shock waves. In this study, such processes are numerically simulated by allocating a rectangular blockage in a b = 7.4 cm channel, where attention is focused on the behavior of the detonation in the vicinity of a backward-facing step. First, a stable detonation with periodical structure having two triple shock waves is worked out for a stoichiometric oxyhydrogen at Po = 0.1 atm. Then, the collision of one triple shock wave with the forward-facing step and the interaction of the other triple shock wave with the Prandtl-Meyer expansion from the backward-facing step are studied.
Download or read book Experimental Investigation of the Initiation of Detonation Behind a Reflected Shock Wave written by Thomas John Krusic and published by . This book was released on 1966 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this work was to develop an experimental apparatus for the study of the initiation of detonation in a gaseous medium as a result of shock compression. The design of the apparatus is described, and results of some preliminary experiments are reported. They indicate that the mechanism of the initiation process behind reflected waves in a shock tube is essentially different than that caused by an accelerating flame. (Author).
