Accession Number : AD0706341

Title :   THE INFLUENCE OF A FREE SURFACE ON UNDERWATER SPHERICAL EXPLOSIONS,

Corporate Author : CALIFORNIA UNIV BERKELEY DIV OF AERONAUTICAL SCIENCES

Personal Author(s) : Holt,M. ; Ballhaus,W. F. , Jr

Report Date : MAR 1970

Pagination or Media Count : 49

Abstract : The flow field resulting from the rupture of a pressurized sphere at a small depth beneath the ocean surface is studied. Specifically, the positions on the axis of the underwater shock, the shock transmitted into air, the disturbed ocean surface, the head of the expansion wave reflected from the surface, and the gas-water contact front are determined as functions of time. The shape of the transmitted shock front and the disturbed ocean surface are also found for a given time. Solutions are obtained by integrating a set of first order ordinary differential equations numerically with respect to time. Calculations are carried out for a sphere of helium at a pressure of 10,000 atmospheres with a ratio of depth to initial sphere radius equal to three. (Author)

Descriptors :   (*HEMISPHERICAL SHELLS, UNDERWATER EXPLOSIONS), (*UNDERWATER EXPLOSIONS, PROPAGATION), DETONATION WAVES, EXPLOSION BUBBLES, WATER, EXPLOSION GASES, INTERACTIONS, FLOW FIELDS, REACTION KINETICS, EQUATIONS OF MOTION

Subject Categories : Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE