Accession Number : AD1010740

Title :   Radial Basis Function Based Quadrature over Smooth Surfaces

Descriptive Note : Technical Report,01 Sep 2014,24 Mar 2016

Corporate Author : AFIT WPAFB United States

Personal Author(s) : Watts,Maloupu L

Full Text :

Report Date : 24 Mar 2016

Pagination or Media Count : 95

Abstract : The numerical approximation of definite integrals, or quadrature, often involves the construction of an interpolant of the integrand and subsequent integration of the interpolant. It is natural to rely on polynomial interpolants in the case of one dimension; however, extension of integration of polynomial interpolants to two or more dimensions can be costly and unstable. A method for computing surface integrals on the sphere is detailed in the literature (Reeger and Fornberg,Studies in Applied Mathematics, 2016). The method uses local radial basis function (RBF) interpolation to reduce computational complexity when generating quadrature weights for the particular node set. This thesis expands upon the same spherical quadrature method and applies it to an arbitrary smooth closed surface defined by a set of quadrature nodes and triangulation.

Descriptors :   theses , numerical quadrature , interpolation , numerical integration , integrals , spheres , surfaces , integral equations

Subject Categories : Theoretical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE