Accession Number : ADA322080

Title :   On the Dynamics of the Bubble Created Upon Detonation of a Limpet Mine.

Descriptive Note : Tecnical rept.,

Corporate Author : DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)

Personal Author(s) : Best, John P.

PDF Url : ADA322080

Report Date : NOV 1996

Pagination or Media Count : 22

Abstract : In this report a simple model of the bubble formed by detonating a limpet mine in contact with a plane surface is developed. The key features are the assumption of a hemispherical bubble and the account taken of the outflow of detonation products from the bubble through the hole caused by the detonation. The outflow of the gas is assumed to be one dimensional. The equations describing the time variation of the bubble radius are solved for various values of the physical parameters describing the explosion. The model displays oscillatory behaviour which is damped due to the loss of energy via the outflowing gas. Under some circumstances, the outflow of gas is so large that only one oscillation of the bubble occurs.

Descriptors :   *EXPLOSION BUBBLES, SHOCK WAVES, ENERGY, UNDERWATER EXPLOSIONS, OSCILLATION, RADIUS(MEASURE), COMBUSTION PRODUCTS, LIMPET WEAPONS.

Subject Categories : Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE