Toward Detonation Theory

Toward Detonation Theory PDF Author: Anatoly N. Dremin
Publisher: Springer Science & Business Media
ISBN: 9780387986722
Category : Technology & Engineering
Languages : en
Pages : 172

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Book Description
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.

Toward Detonation Theory

Toward Detonation Theory PDF Author: Anatoly N. Dremin
Publisher: Springer Science & Business Media
ISBN: 9780387986722
Category : Technology & Engineering
Languages : en
Pages : 172

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Book Description
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.

Toward Detonation Theory

Toward Detonation Theory PDF Author: Anatoly N. Dremin
Publisher: Springer Science & Business Media
ISBN: 1461205638
Category : Technology & Engineering
Languages : en
Pages : 163

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Book Description
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.

Theory of Detonation

Theory of Detonation PDF Author: I︠A︡kov Borisovich Zelʹdovich
Publisher:
ISBN:
Category : Acoustic phenomena in nature
Languages : en
Pages : 306

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Book Description


Combustion Theory

Combustion Theory PDF Author: Forman A. Williams
Publisher: CRC Press
ISBN: 0429973683
Category : Science
Languages : en
Pages : 549

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Book Description
Combustion Theory delves deeper into the science of combustion than most other texts and gives insight into combustions from a molecular and a continuum point of view. The book presents derivations of the basic equations of combustion theory and contains appendices on the background of subjects of thermodynamics, chemical kinetics, fluid dynamics, and transport processes. Diffusion flames, reactions in flows with negligible transport and the theory of pre-mixed flames are treated, as are detonation phenomena, the combustion of solid propellents, and ignition, extinction, and flamibility pehnomena.

Combustion, Flames and Explosions of Gases

Combustion, Flames and Explosions of Gases PDF Author: Bernard Lewis
Publisher: Academic Press
ISBN: 1483258394
Category : Science
Languages : en
Pages : 754

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Book Description
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.

Handbook of Shock Waves

Handbook of Shock Waves PDF Author: Gabi Ben-Dor
Publisher: Academic Press
ISBN: 9780120864324
Category : Shock waves
Languages : en
Pages : 792

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Book Description


AIRCRAFT PROPULSION

AIRCRAFT PROPULSION PDF Author: MAYUR R ANVEKAR
Publisher: PHI Learning Pvt. Ltd.
ISBN: 8120352645
Category : Science
Languages : en
Pages : 125

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Book Description
With the changing technological environment, the aircraft industry has experienced an exponential growth. Owing to the escalating use of aircrafts nowadays, it is required for the professionals and learners of the field to have conceptual understanding of propulsion systems and ability to apply these concepts in a way to develop aircrafts that make them fly further, higher and faster. Designed as a text for the undergraduate students of Aerospace and Aeronautical Engineering, the book covers all the basic concepts relating to propulsion in a clear and concise manner. Primary emphasis is laid on making the understanding of theoretical concepts as simple as possible by using lucid language and avoiding much complicated mathematical derivations. Thus, the book presents the concepts of propulsion in a style that even the beginners can understand them easily. The text commences with the basic pre-requisites for propulsion system followed by the fundamental thermodynamic aspects, laws and theories. Later on, it explains the gas turbine engine followed by rocket engine and ramjet engine. Finally, the book discusses the introductory part of an advanced topic, i.e., pulse detonation engine. KEY FEATURES OF THE BOOK • Coverage of all major types of propulsion systems • Focus on specific systems and sub-systems of gas turbine engine in individual chapters • Possesses pedagogical features like chapter-end important questions and suggested readings

Proceedings

Proceedings PDF Author:
Publisher:
ISBN:
Category : Acoustic phenomena in nature
Languages : en
Pages : 688

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Book Description


Technical Publications Announcements with Indexes

Technical Publications Announcements with Indexes PDF Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1556

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Book Description


Internal Combustion Engine in Theory and Practice, second edition, revised, Volume 2

Internal Combustion Engine in Theory and Practice, second edition, revised, Volume 2 PDF Author: Charles Fayette Taylor
Publisher: MIT Press
ISBN: 9780262700276
Category : Technology & Engineering
Languages : en
Pages : 804

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Book Description
This revised edition of Taylor's classic work on the internal-combustion engine incorporates changes and additions in engine design and control that have been brought on by the world petroleum crisis, the subsequent emphasis on fuel economy, and the legal restraints on air pollution. The fundamentals and the topical organization, however, remain the same. The analytic rather than merely descriptive treatment of actual engine cycles, the exhaustive studies of air capacity, heat flow, friction, and the effects of cylinder size, and the emphasis on application have been preserved. These are the basic qualities that have made Taylor's work indispensable to more than one generation of engineers and designers of internal-combustion engines, as well as to teachers and graduate students in the fields of power, internal-combustion engineering, and general machine design.