Accession Number : AD0735875

Title :   Finite Amplitude Propagation of an Underwater Explosion Shock Wave along a Strongly Refracted Ray Tube

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Goertner, John F

PDF Url : AD0735875

Report Date : 01 Dec 1971

Pagination or Media Count : 31

Abstract : The effect of wave overtaking on the peak pressure of refracted underwater explosion shock waves is estimated by means of a finite amplitude calculation for the wave propagation along refracted ray tubes given by simple ray theory. The results indicate that a reduction in peak pressure occurs due to increased wave-overtaking along refracted ray paths to first caustics. Reductions in the peak pressure no greater than 5% occurred for the particular refractive conditions treated, but preliminary work with other conditions indicates much greater reductions can occur.

Descriptors :   *COMPRESSIBLE FLOW, *SHOCK WAVES, *UNDERWATER EXPLOSIONS, DIFFERENCE EQUATIONS, ENTROPY, EQUATIONS OF MOTION, INTEGRATION, NUMERICAL ANALYSIS, PARTIAL DIFFERENTIAL EQUATIONS, REFRACTION

Subject Categories : Numerical Mathematics
      Explosions
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE