Review of "The Detonation Phenomenon"

Joseph E. Shepherd; Paul Thibault

doi:10.2514/1.43659

Air-petrol burners use for solid stone mining and processing

Science intensive technologies in mechanical engineering ◽

10.12737/article_5a313b63b01a13.12923103 ◽

2017 ◽

Vol 2 (12) ◽

pp. 8-14

Author(s):

Виталий Поветкин ◽

Vitaliy Povetkin ◽

Амина Букаева ◽

Amina Bukaeva ◽

Александр Хандожко ◽

...

Keyword(s):

Fuel Component ◽

Development Stages ◽

Free Jet ◽

Detonation Phenomenon

The development stages of thermo-jet burners with the intensifiers of fuel component combustion are described. Investigations for obtaining a detonation phenomenon in a free jet of burners at fuel component combustion are shown. The design peculiarities in developments of air-petrol thermo-tools allowing the intensification of the processes of fuel component combustion are shown.

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A One-Dimensional Discrete Boltzmann Model for Detonation and an Abnormal Detonation Phenomenon

Communications in Theoretical Physics ◽

10.1088/0253-6102/71/1/117 ◽

2019 ◽

Vol 71 (1) ◽

pp. 117

Author(s):

Yu-Dong Zhang ◽

Ai-Guo Xu ◽

Guang-Cai Zhang ◽

Zhi-Hua Chen

Keyword(s):

One Dimensional ◽

Boltzmann Model ◽

Detonation Phenomenon

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Performance of a Generic 4-Step Global Reaction Mechanism With Equilibrium Effects for Detonation Applications

Volume 11: Heat Transfer and Thermal Engineering ◽

10.1115/imece2020-23786 ◽

2020 ◽

Author(s):

Mohnish Peswani ◽

Brian McN. Maxwell

Keyword(s):

Reaction Mechanism ◽

Reaction Mechanisms ◽

Chemical Kinetic ◽

Detailed Chemistry ◽

Computational Overhead ◽

Hydrodynamic Structure ◽

Ignition Characteristics ◽

Global Reaction ◽

Key Aspects ◽

Detonation Phenomenon

Abstract A reduced 4-species, 4-step Global Reaction Mechanism (GRM) [1], derived from detailed chemistry using a thermochemical approach, is investigated for three different reactive mixtures. The trade-off between preciseness of Elementary Reaction Mechanisms (ERMs), and low computational overhead requirements of GRMs remains a dilemma in the application of chemical kinetic models to detonation problems. Reducing a reaction mechanism often compromises the chemical details, and reduces the scope of applicability of the derived model. This is largely due to the mixture chemistry having a vital influence on several key aspects of the detonation phenomenon like initiation, quenching, and the dynamics of the wave front and hydrodynamic structure during propagation. For detonation problems in particular, there has been an insufficient replication of the complex reality of the phenomenon through numerical simulations which has lead to a constant demand for more accurate and affordable models. Three separate stoichiometric combustion mixtures are investigated, each involving acetylene, methane, or propane mixed with oxygen. Each mixture exhibits very different global activation energies, heat release, and ignition characteristics.

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The Performance of Pressure Vessel Using Concentric Double Cylindrical High Explosive

Journal of Pressure Vessel Technology ◽

10.1115/1.1804201 ◽

2004 ◽

Vol 126 (4) ◽

pp. 409-413 ◽

Cited By ~ 1

Author(s):

Toru Hamada ◽

Yuichi Nakamura ◽

Shigeru Itoh

Keyword(s):

High Velocity ◽

High Explosive ◽

Maximum Pressure ◽

Detonation Pressure ◽

Low Velocity ◽

High Explosives ◽

Detonation Process ◽

Set Up ◽

Overdriven Detonation ◽

Detonation Phenomenon

The detonation pressure from the steady detonation of high explosives is a characteristic. Nevertheless, in materials processing using high explosives, there are cases when the detonation pressure does not match the intended pressure. In this investigation, as a new method of generating the overdriven detonation effectively, a double cylindrical high explosive set up using two kinds of explosives was developed, and its basic performance is analyzed. The concentric double cylindrical high explosive set up was composed of a high velocity explosive and a low velocity explosive, and the overdriven detonation was performed in the low velocity explosive. In this experiment, the ion gap was set up in the high velocity explosive and low velocity explosive respectively, and the detonation velocity was measured. The detonation pressure was also measured by setting up a manganin gauge (Kyowa Electric Instrument Co., Ltd.,) at the position where the generation of the overdriven detonation phenomenon was expected. Furthermore, the overdriven detonation process of the concentric double cylindrical high explosive was continually observed by numerical analysis and the framing photography. From the experimental results, the very high pressure region including the mach stem was observed in the low velocity explosive, and the overdriven detonation phenomenon was confirmed. The maximum pressure value of the concentric double cylindrical high explosive set up was 2.3 times higher than the Chapman-Jouguet pressure of the single explosive.

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