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A new singularity treatment technique of higher-order moment method is proposed to avoid the intensive computation of the Duffy transformation with Gaussian quadrature. We first transform the u-v coordinates of NURBS patch into the polar coordinates and approximate the NURBS expression in the polar coordinates through the expansion of the Bernstein polynomials with Taylor series. Then the singularity...
A novel and flexible model of Non-uniform rational B-spline (NURBS) surface-wire junction with hybrid low- and higher-order basis function is presented. This junction model consists of a wire segment and a set of triangles which are constructed from the local geometric characteristic of the NURBS surface and overlap part of the NURBS surface. The proposed junction model is floating and can be flexibly...
In this paper, OpenMP is employed to speedup the EM scattering simulation with NURBS-HOMM, and the comparison of OpenMP and MPI is not the aim of this paper. The examples are executed on a PC of quad-core processor and the servers of multi-core processors, and the obtained results show that CPU time is much reduced and good parallel efficiency is achieved.
A novel implementation of combining lower-and higher-order basis functions (LHOBF) is presented. Analysis of antennas in complex environment or mounted on large platform is a popular problem in electromagnetic compatibility (EMC) study. Lower-order basis functions (LOBF) can well describe the small features of antenna, which are defined on segments, triangles and wire-surface junctions; however, a...
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