Accession Number : AD0825028

Title :   TRANSIENT PRESSURES INDUCED ON A SLENDER BODY UNDER OBLIQUE BLAST WAVE INTERCEPTION.

Descriptive Note : Technical rept.,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB

Personal Author(s) : Brooks, William Bryan

Report Date : JUL 1967

Pagination or Media Count : 222

Abstract : The solution to the problem of the oblique interaction of an initially-plane finite-strength blast wave with a supersonic body is sought as a weak solution of the differential equations of inviscid flow. In the region of flow behind the blast wave, the equations are partitioned so as to determine the successive terms in an asymptotic approximation to the exact solution. The specification of a boundary value problem for each of the terms in the pressure expansion over the interaction region is completed by estimating the shape of the diffracted blast wave by means of an extension of Whitham's theory of shock dynamics to allow for motion of the diffracting body. The resulting boundary value problem is solved by means of pressure source and pressure doublet distributions. Comparisons are carried out with the theories of Smyrl, Blankenship, and Blankenship-Busemann as well as with the available experimental data from NOL. While the results of these comparisons are encouraging, sufficient data are not yet available for conclusive comparisons.

Descriptors :   (*SLENDER BODIES, BLAST), (*BLAST, INTERACTIONS), FLOW FIELDS, SHOCK WAVES, SUPERSONIC FLOW, DIFFRACTION, PRESSURE, MATHEMATICAL MODELS, INTEGRAL EQUATIONS, PARTIAL DIFFERENTIAL EQUATIONS, BOUNDARY VALUE PROBLEMS, COMPUTER PROGRAMMING, NUMERICAL ANALYSIS, CONICAL BODIES, HEAT TRANSFER, EQUATIONS OF MOTION.

Subject Categories : Numerical Mathematics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE