Accession Number : ADA182223

Title :   A Parametric Patch Surface Geometry Definition for the Three-Dimensional Retarded Potential Technique.

Descriptive Note : Final rept. Oct 83-Sep 84,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Tamm,Martin A

PDF Url : ADA182223

Report Date : 17 Jun 1987

Pagination or Media Count : 13

Abstract : A parabolically parametric surface patch basis has been developed for the geometric calculations of the discretized retarded potential integration. Arbitrary three dimensional surface geometries can be handled, with a present restriction on the allowed orientation of the surface patch grid lines. A test problem confirms the accuracy of the formulation. Keywords: Retarded potential integral; Boundary element method; Acoustic wave; Parametric surface geometry; Differential geometry.

Descriptors :   *ACOUSTIC WAVES, *POTENTIAL FLOW, *SHOCK, ACCURACY, FORMULATIONS, BOUNDARIES, COMPUTATIONS, GEOMETRY, PARAMETERS, SURFACE PROPERTIES, SURFACES, RETARDATION, GRIDS(COORDINATES), THREE DIMENSIONAL, DIFFERENTIAL GEOMETRY, PARAMETRIC ANALYSIS, PARAMETERS, INTEGRATION, BOUNDARY VALUE PROBLEMS

Subject Categories : Fluid Mechanics
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE