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Showing 1 to 20 of 37 for “"detonations"”.
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An Investigation of Hydrogen-Oxygen-Argon Detonations
Made available in DSpace on 2014-12-10T23:36:45Z (GMT). No. of bitstreams: 1 7411949.pdf: 5440085 bytes, checksum: 118092a5d9339486640507c5a7e03f23 (MD5) Previous issue date: 1973
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Instability of steady and quasi-steady detonations
… to study the linear and nonlinear stability of detonations. Shock-fitted numerical simulation is used to study the two-dimensional instability of steady solutions to the Zel'dovich, von Neumann, and Doring (ZND) model of detonation. It is demonstrated through several methods of analysis that the …
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Phenomenological Investigation of Low Mode Marginal Planar Detonations
Made available in DSpace on 2015-05-12T21:44:32Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7000824.PDF: 4406488 bytes, checksum: 286d88d43ed9bc2dd6148734d345b09e (MD5) Previous issue date: 1969
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Translational Non-Equilibrium Effects in Reactive Dynamics of Detonations
… wave amplification, and diffraction limits of detonations. First, the role of translational non-equilibrium in reactive dynamics in the thermal explosion problem is investigated using molecular dynamics (MD) simulations and continuum models. Ignition delays are calculated and compared with …
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Experimental Study of Mach Reflection in Wedge-Driven Detonations
Made available in DSpace on 2014-12-09T18:12:28Z (GMT). No. of bitstreams: 1 7013394.pdf: 4198588 bytes, checksum: 5e3749bcc661b01a9a43463d95eccd68 (MD5) Previous issue date: 1969
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Numerical Modeling of the Energy Release of Aluminized Oxyacetylene Detonations
… of pure oxyacetylene and aluminized oxyacetylene detonations and their blast efficiency. A numerical model was developed using blastFoam to accurately capture shock wave parameters using a compressed gas balloon method. For this method, the explosive was replaced by a compressed gas balloon with …
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Unstructured grid simulations of shocks and detonations in two-phase flows
A series of numerical simulations have been made of compressible two-phase flows containing inert particles. An existing conservative, monotonic compressible flow solver with an unstructured, adaptive mesh was used as the basis for code development. This flow solver incorporated the Finite Element …
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Multiphase extensions to ODE models for detonations of non-ideal explosives
… is then extended to model confined multiphase detonations, with realistic equations of state for the confining material, and predicts most strong confinement examples well. Future work of extending to curved streamlines and including confinement other than strong or weak is discussed.
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Shock Physics of Non-Ideal Detonations for Energetic Explosives With Aluminum Particles
Results indicate that the induction delay for the aluminum particles, combined with endothermic processes, alter the structure of the reaction zone, and produce a secondary shock wave which never reaches the detonation wave front. Additionally, under certain combinations of heat transfer rate and …
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Distributions of fallout from medium size thermonuclear detonations in model wind fields
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1964.
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Development of an Engineering Model for Prediction of Ground Shock From Decoupled Detonations
The prediction technique developed in this effort defines cavity wall loading as a function of scaled distance. The cavity wall pressure, which is strongly influenced by the stagnation of the detonation products, was used to determine peak radial stress in the free-field. A material strength …
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The Influence of Cellular Structure on the Dynamics of Detonations with Constant Mass Divergence
… evidence that the cellular structure of detonations promotes their propagation in the presence of losses. In spite of that, the conventional model for the detonation structure, known as the Zeldovich - Von Neumann - Doring (ZND) model, neglects the existence of cellular structure for …
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Analyzing decomposition of diisopropyl methylphosphonate (DIMP) in high-explosive detonations using absorption spectropscopy and gas concentration measurements
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Theory of Instability and Nonlinear Evolution of Self -Sustained Detonation Waves
… and nonlinear dynamics of self-sustained detonations is investigated by means of asymptotic analysis and numerical simulations. The normal-mode linear stability analysis is carried out for gaseous detonations propagating in cylindrical tubes. By comparison of the stability predictions with …
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Investigations on detonation shock dynamics
… reaction referred to as the reaction zone. Detonations have a wide variety of engineering applications, from obvious military uses to explosive welding, hard rock mining, and materials processing. Detonations can occur in a variety of materials, including gases (such as premixed hydrogen and …
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Bifurcating Mach Shock Reflections with Application to Detonation Structure
… after reflection indicates that bifurcations in detonations are a result of the shock reflection process. Further investigations revealed that bifurcations likely contribute to the irregular structure observed in certain detonations.
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Experimental Investigation of Gaseous Oxyacetylene Blast Enhancement by the Combustion of Suspended Multimodal Spherical Aluminum Powder
… release efficiency during combustion in these detonations. These results were compared against oxyacetylene detonations conducted with the addition of unimodal aluminum particles approximately 1, 10, 30, and 95 μm in diameter. These experiments were controlled by maintaining a particle mass …
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Machine Learning to Predict Warhead Fragmentation In-Flight Behavior from Static Data
… fly-out properties from high-speed warhead detonations is essential for estimation of collateral damage and lethality for a given weapon. Real warhead dynamic detonation tests are rare, costly, and often unrealizable with current technology, leaving fragmentation experiments limited to …
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Detonation modelling of non-ideal high explosives
… a shock wave coupled to chemical energy release. Detonations in conventional HE (CHE) propagate with a typical velocity of 6 - 8 km/s. Insensitive HE (IHE) and non-ideal HE (NIHE) are of particular interest as they are harder to initiate and thus safer to store and transport. Detonations in IHEs …
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