Accession Number:

AD0628000

Title:

PRESSURE WAVES IN THE AIR ABOVE A SHALLOW UNDERWATER EXPLOSION: AN APPROXIMATE CALCULATION BY THE METHOD OF CHARACTERISTICS,

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1965-12-28

Pagination or Media Count:

101.0

Abstract:

An approximate method for calculating the pressure wave ahead of an impulsively started blunt-nosed axisymmetric body of arbitrary and variable nose radius and velocity is described. The method is then used to calculate the pressure wave ahead of the spray dome and water plume from 1-lb explosions at depths from 0.3 to 0.6 feet. Agreement with experimental data is good. The results demonstrate that taking the outer contour of the spray dome and water plume as an impervious surface displacing the air is a practicable boundary condition for air wave calculations. They also demonstrate the dominance of the plume motion in producing airblast at the shallow end of the above depth range. Author

Subject Categories:

  • Explosions
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE