Shock Wave Research: Yesterday, Today and Tomorrow

Duvall, G. E.

doi:10.1007/978-1-4613-2207-8_1

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“…In order to assess a target‐induced shock, concepts such as acoustic impedance and dynamic adiabatic (also called shock polar) were employed. The mathematical relations of the two concepts are expressed in Equation and Equation :

true p - p_{0} = ρ_{0} u D (u)

true Z = ρ_{0} D

…”

Section: Methodsmentioning

confidence: 99%

Numerical Simulation and Experimental Tests on Explosively‐Induced Water Jet Phenomena

Enache

Trană

Rotariu

et al. 2016

Propellants Explo Pyrotec

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This study addresses some aspects regarding water jet propulsion during high explosives detonation. A number of theoretical and experimental studies have shown that using Gurney equation and the relationships derived, one can provide fair results regarding initial velocity of metallic fragments for explosively‐driven metal casings. However, an investigation on Gurney equations utilization for the prediction of water velocity has not been performed yet. By carrying out simple experimental tests and numerical simulations, water has been investigated in terms of total mass average velocity and tip velocity. Based on the available data, the findings indicate that Gurney equations overestimate the water mass average velocity. For water tip velocity evaluation, further studies should be made.

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