Note On The Migration Of Explosion Bubbles
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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.
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.
Migration Of Explosion Bubbles In A Rotating Test Tank
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Author : Hans G. Snay
language : en
Publisher:
Release Date : 1962
Migration Of Explosion Bubbles In A Rotating Test Tank 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.
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.
Charts For The Parameters Of Migrating Explosion Bubbles
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Author : Hans G. Snay
language : en
Publisher:
Release Date : 1963
Charts For The Parameters Of Migrating Explosion Bubbles 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 1963 with Underwater explosions categories.
Graphs are presented for the relative bubble energies, maximum radii, periods, and migrations of underwater explosion bubbles for four cycles of the bubble oscillation. The migration refers to the bubble maximum in each cycle. The position of the bubble minimum can be readily found by a simple computation. The graphs permit a convenient reading of these parameters for a wide range of conditions.
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 Effects Of Non Sphericity And Radiative Energy Loss On The Migration Of The Gas Bubble From Underwater Explosions
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Author : K. C. Heaton
language : en
Publisher:
Release Date : 1986
The Effects Of Non Sphericity And Radiative Energy Loss On The Migration Of The Gas Bubble From Underwater Explosions written by K. C. Heaton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
An important phenomena associated with the upward motion of a gas bubble from an underwater explosion is the significant departure from sphericity near the times of the minimum bubble radius. Neglecting this change in shape results in the prediction of a much faster upward velocity than actually occurs. Inclusion of this effect in the equations of motion has been exceedingly difficult because of the large magnitude of the departure from sphericity. This report describes the shape of the bubble by an ellipsoid whose axes are allowed to vary independently, thus modelling, to first order, the changes of bubble shape. The Lagrangian equations of motion, incorporating the effects of the change of shape and of energy loss by the radiation of sound, are derived and solved for the case of a spheroidal bubble. Results of these calculations for various initial conditions are compared with analgous cases for a spherical bubble. It is found that the spheroidal bubble model predicts a reduction in the upward translational motion of the bubble by a factor of approximately 2. Comparison of the predicted upward motion of a spheroidal bubble produced by 227.27 kg. of TNT detonated 46 metres below the surface shows good agreement with that which has actually observed. Keywords: Explosion bubbles. (Canada).
Vacuum Tank Studies Of Gravity Migration Of Underwater Explosion Bubbles
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Author : John F. Goertner
language : en
Publisher:
Release Date : 1956
Vacuum Tank Studies Of Gravity Migration Of Underwater Explosion Bubbles written by John F. Goertner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1956 with Underwater explosions categories.
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.
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: Legare Street Press
Release Date : 2023-07-18
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 Legare Street Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-18 with categories.
This groundbreaking study of underwater explosion bubbles offers a new understanding of their shape and motion. Written by a renowned physicist, it provides insights into the complex physics of underwater explosions and their effects on the surrounding environment. 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 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. 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.