Accession Number : AD0673002

Title :   DIFFRACTION OF A PLANE ACOUSTIC PULSE BY A FREE ORTHOGONAL TRIHEDRON (3-D CORNER),

Corporate Author : STATE UNIV OF NEW YORK BUFFALO DIV OF INTERDISCIPLINARY STUDIES AND RESEARCH

Personal Author(s) : Shaw,R. P. ; Courtine,D. F.

Report Date : MAY 1968

Pagination or Media Count : 45

Abstract : The normal velocity field on arbitrary three dimensional scattering surfaces, struck by a weak acoustic plane wave is considered. Numerical solutions for a right angle wedge and a right angle corner (i.e., three orthogonal edges of infinite length) are found. For the wedge, the angle between the wave front normal and the wedge edge may be arbitrary, while for the corner the wave front normal is taken to form equal angles with the three orthogonal edges to make use of symmetry. In both problems, the scattering obstacle is assumed to have a free surface (i.e., pressure is zero). The wedge problem, for which an exact solution is known, is used as a test case for the various numerical procedures used. (Author)

Descriptors :   (*SHOCK WAVES, DIFFRACTION), (*UNDERWATER VEHICLES, SHOCK WAVES), (*STRUCTURES, UNDERWATER EXPLOSIONS), RECTANGULAR BODIES, WEDGES, SCATTERING, PRESSURE, NUMERICAL METHODS AND PROCEDURES, COMPUTER PROGRAMS, CORRELATION TECHNIQUES, BLAST, DAMAGE, UNDERWATER VEHICLES, UNDERWATER SOUND SIGNALS

Subject Categories : Marine Engineering
      Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE