Effect of Properties of the Source on the Action of Explosions in Air and Water

Khristoforov, B. D.

doi:10.1023/b:cesw.0000048277.31127.06

Cited by 7 publications

(4 citation statements)

References 1 publication

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“…Increment in the maximum dimensionless pressure Δπ (a) and the normalized impulse I/E 1/3 (b) in the BW during electric discharge versus the dimensionless distance λ: solid curves correspond to calculations using the Sadovskii formulas (1) for an explosion of TNT, dashed curves to an explosion of a hot sphere [4], and points are experimental data. effect of the properties of the source on the explosion effect [7]. The model measurement data for the chosen model conditions are consistent with thunder and lightning parameters [1][2][3].…”

Section: Modeling Resultssupporting

confidence: 55%

Modeling gas-dynamic processes in thunderstorms by powerful electric discharges

Khristoforov

2010

Combust Explos Shock Waves

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Conditions of using electric discharges for laboratory modeling of gas-dynamic processes in thunderstorms are considered. Methods of experimental modeling of lightning bolts by capacitor bank discharges are developed. Modeling criteria are obtained from the general equations describing the model and full-scale processes. Channel and blast-wave parameters were measured during powerful electric discharges in model experiments. Experimental data are compared with calculations of the explosion effect using various techniques. The TNT equivalents of the electric discharges modeling thunderstorms are determined. The lightning energy is estimated from its photographs, and the parameters of the blast wave in the near zone and acoustic perturbations at large distances in the air and ground are determined.

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Section: Modeling Resultssupporting

confidence: 55%

Modeling gas-dynamic processes in thunderstorms by powerful electric discharges

Khristoforov

2010

Combust Explos Shock Waves

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“…Was used industrial camera SFR-2M with frequency of shooting up to 2.5 10 6 frames/s or in the version streak camera with resolution up to 2 10 -8 s. A typical picture of the strong shock wave flowing from a tube is shown on figure 1b. Equipment complex applied to measure the actions of blasts in different environments is outlined in [2,4,6]. Error of a single measurement by different methods did not exceed 10%.…”

Section: Statement Of the Testsmentioning

confidence: 99%

“…However, these applications usually used brisance action of contacting blasts [1,2]. An approximate theory of explosives blast in tubes with gas when the gas mass was smaller than the mass of explosion products m the results of measurements of shock waves parameters inside tubes with air at the blasts of powerful explosives at their open end are given in [3,4].…”

Section: Introductionmentioning

confidence: 99%

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The Study of Large Plastic Deformation and Fracture of Plates by Blast of Explosives in the Tubes

Khristoforov

2014

ujes

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Experimental studies and calculations of large plastic deformations and fracture of the aluminum alloy plates of different thickness by the shock waves of blasts of powerful explosives in tubes of different lengths and diameters were carried out. The deformations the plates were investigated with a single and consistent impact loading by shock waves. Parameters of shock waves and loads on the plates in the tubes were measured and method of their calculation was worked. The empirical dependences of the maximum residual deflections and increment area of the plates depending on the load pulse parameters and the plates were obtained. Dynamic strength of the aluminum alloy was defined.

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Theoretical Prediction of Pressure and Temperature of an Aluminized High Explosive in Underwater Explosion

Rao

Kumar

Rao

et al. 2013

Propellants Explo Pyrotec

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The blast wave propagation in underwater explosion was studied. The shock propagation in water medium was different from that in air. The blast effect in water lasted longer and offered resistance to the expansion of hot gases and release of energy. A theoretical analysis of the expansion of blast wave in water was carried out and numerical results for pressures and temperatures were obtained as functions of distance and time by analytically solving the governing equations. The initial peak pressures of blast waves, which were required for theoretical analysis were calculated using the blast wave theory. Underwater blasts with different weights (0.045, 0.5, and 1.0 kg) of the aluminized high explosive HBX‐3 were conducted to record pressure as a function of distance and time from the blast point. Theoretical results were compared with experimental data and empirical data for HBX‐3 from literature. Since the measurement of pressure and temperature at close proximity of point of detonation is difficult, theoretical modeling of underwater blast is of significant importance.

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Effect of Properties of the Source on the Action of Explosions in Air and Water

Cited by 7 publications

References 1 publication

Modeling gas-dynamic processes in thunderstorms by powerful electric discharges

Modeling gas-dynamic processes in thunderstorms by powerful electric discharges

The Study of Large Plastic Deformation and Fracture of Plates by Blast of Explosives in the Tubes

Theoretical Prediction of Pressure and Temperature of an Aluminized High Explosive in Underwater Explosion

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