Numerical modeling of formation of high-speed water slugs

Document Type

Conference Proceeding

Publication Date

3-1-2004

Abstract

The objective of this work is to investigate acceleration of a water slug by the powder explosion. The process occurs in a device termed the water cannon, which entails a barrel with an attached nozzle. The explosion products expel the slug from the barrel at an extremely high speed. Due to the acceleration in the nozzle the speed of the slug significantly exceeds that of a bullet driven by the similar explosion. The computational procedure was used to evaluate the pressure, velocity and density fields in the course of slug acceleration in the x-t space. The procedure is based on the finite difference method and the method of characteristics. The initial water velocity and pressure are assumed to be zero. The pressure at water-explosion product interface is determined by the conditions of the powder combustion while the pressure at the water-atmosphere interface is equal to zero. The results of the computations enable us to explain the peculiarities of the operation of the water cannon and to optimize device design.

Identifier

11144345719 (Scopus)

Publication Title

Journal of Fluids Engineering Transactions of the ASME

External Full Text Location

https://doi.org/10.1115/1.1669421

ISSN

00982202

First Page

206

Last Page

209

Issue

2

Volume

126

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