Explosion Product Redistribution Mechanisms For Scaled Migrating Underwater Explosion Bubbles
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Explosion Product Redistribution Mechanisms For Scaled Migrating Underwater Explosion Bubbles
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Author :
language : en
Publisher:
Release Date : 1966
Explosion Product Redistribution Mechanisms For Scaled Migrating Underwater Explosion Bubbles written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with categories.
A submerged gold wire was electrically exploded to simulate a very deep underwater nuclear detonation. These small-scale tests were conducted in a test tank in which the air pressure may be varied to obtain various strengths of buoyant bubble migration. The mechanics of explosion bubble formation, pulsation, and migration are discussed, and relevant relationships are derived for scaling large-yield bubble behavior in the laboratory by variation of environmental parameters. The mechanisms by which the explosion products, initially at the bubble center during the first cycle, are redistributed by bubble bottom collapse, compression, reexpansion, and migration, are investigated. The experimental technique involved physically sampling the bubble and its environment at the second bubble maximum to define the extent and nature of explosion product re-distribution. Three different shot conditions were investigated, corresponding to a 'rest-point' condition, a condition characterized by slight upward migration, and one characterized by strong upward migration. In all cases, it was found that most (77 to 94%) of the explosion products are lost to the environment by the time of the second bubble maximum. The probable mechanisms for this loss are discussed, and rules are derived for application of these results to full-scale underwater bursts.
Technical Abstract Bulletin
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Author :
language : en
Publisher:
Release Date :
Technical Abstract Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Science categories.
Government Wide Index To Federal Research Development Reports
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Author :
language : en
Publisher:
Release Date : 1967
Government Wide Index To Federal Research Development Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Government publications categories.
Note On The Migration Of Explosion Bubbles
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Author : J. C. Decius
language : en
Publisher:
Release Date : 1949
Note On The Migration Of Explosion Bubbles written by J. C. Decius and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1949 with Bubbles categories.
The theory of the migration of the bubble formed by the gaseous products of an underwater explosion is review, particular care being taken to state the assumptions involved and to indicate their validity. The theory is then compared with the experimental data available at the Underwater Explosives Laboratory by graphical mean. The comparison show that the theory correctly predicts the migration for charges weighing less than 25 lbs but predicts too great a migration for larger charges except when the larger charges are very deep.
Proceedings
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Author : Maurice Holt
language : en
Publisher:
Release Date : 1971
Proceedings written by Maurice Holt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Aerodynamics, Supersonic categories.
Underwater Explosion Phenomena
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Author : Hans G. Snay
language : en
Publisher:
Release Date : 1962
Underwater Explosion Phenomena written by Hans G. Snay and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with categories.
The migration of underwater explosion bubbles caused by gravity (buoyancy) affects the energy of the pulsation as well as period and maximum radius in the second and subsequent cycles. Experimental data on periods of explosions in various depths are analyzed, and the bubble energy is determined for five cycles of the oscillation as a function of the strength of migration. The result is given in dimensionless form which permits the calculation of periods, maximum radii, and migration for a wide range of conditions. An energy balance shows the surprising result that the bubble energy of the second cycle increases with increasing intensity of migration until a maximum is reached at a condition of strong migration. Beyond this point, the energy decreases again. This gain is found to be due to the decrease of the energy radiated by the bubble pulse.
Migration Of Underwater Explosion Bubbles Near Different Boundaries
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Author : 皇甫敬嘉
language : en
Publisher:
Release Date : 2011
Migration Of Underwater Explosion Bubbles Near Different Boundaries written by 皇甫敬嘉 and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Underwater Explosion Phenomena
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Author : Hans G. Snay
language : en
Publisher:
Release Date : 1962
Underwater Explosion Phenomena written by Hans G. Snay and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with categories.
The migration of underwater explosion bubbles caused by gravity (buoyancy) affects the energy of the pulsation as well as period and maximum radius in the second and subsequent cycles. Experimental data on periods of explosions in various depths are analyzed, and the bubble energy is determined for five cycles of the oscillation as a function of the strength of migration. The result is given in dimensionless form which permits the calculation of periods, maximum radii, and migration for a wide range of conditions. An energy balance shows the surprising result that the bubble energy of the second cycle increases with increasing intensity of migration until a maximum is reached at a condition of strong migration. Beyond this point, the energy decreases again. This gain is found to be due to the decrease of the energy radiated by the bubble pulse.
The Physical Effects Of Conventional Explosions On The Ocean Environment
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Author : George Anthony Young
language : en
Publisher:
Release Date : 1970
The Physical Effects Of Conventional Explosions On The Ocean Environment written by George Anthony Young and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Explosives, Military categories.
Current knowledge of the physical effects of underwater explosions on the environment is summarized, with particular attention to the heating of water, the mixing of explosion products with water, and cratering. Theory and data indicate that thermal effects on the environment are negligible because rapid turbulent mixing reduces any temperature excess to a negligible amount within minutes. Virtually no data are available on the mixing of explosion products with water and air. However, information on the bubble and surface phenomena of underwater explosions has been utilized to provide qualitative guidance concerning the distributions immediately after a test. Existing theories of turbulent diffusion can be applied to calculate the subsequent history of the products. Knowledge of the physical effects of bottom explosions on the environment is limited to crater measurements in shallow water and some data on the behavior of explosion bubbles in deep water. Suggested programs to fill gaps in current knowledge are outlined. (Author).
Underwater Explosion Bubbles Iii The Effects Of The Surface And The Bottom On The Shape And Motion Of The Bubble
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Author : Ignace Kolodner
language : en
Publisher: Franklin Classics
Release Date : 2018-10-15
Underwater Explosion Bubbles Iii The Effects Of The Surface And The Bottom On The Shape And Motion Of The Bubble written by Ignace Kolodner and has been published by Franklin Classics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-15 with categories.
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