Accession Number : AD0646759

Title :   DISTORTION OF A SHOCK WAVE TRAVERSED BY A VORTEX,

Corporate Author : TORONTO UNIV (ONTARIO) INST FOR AEROSPACE STUDIES

Personal Author(s) : Filotas,L. T.

Report Date : JAN 1967

Pagination or Media Count : 30

Abstract : A theoretical treatment of the sound field produced upon the interaction of a vortex and a normal shock wave was presented some time ago in UTIA Report No. 61 (H.S. Ribner, 1959). The techniques of this analysis are used to derive expressions for the shape of the distorted shock front. It is found that outside of the section cut off by the cylindrical acoustic wave emanating from the vortex center, the shock remains essentially straight. The portion within this section has curvature, resulting in a finite displacement of the two straight segments. These theoretical predictions are in qualitative agreement with the features noted by experimental investigators of the same phenomenon. As no other presently published theory yields the shock wave shape, this work demonstrates the generality of the approach used. (Author)

Descriptors :   (*SHOCK WAVES, DISTORTION), (*VORTICES, SHOCK WAVES), (*AERODYNAMIC NOISE, SHOCK WAVES), GEOMETRIC FORMS, MATHEMATICAL ANALYSIS, INTERACTIONS, CANADA

Subject Categories : Acoustics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE