Title :
Analysis of airframe-mounted antennas using parallel and hybridized finite-element time-domain methods
Author :
Riley, D.J. ; Pasik, M.F. ; Kotulski, J.D. ; Turner, C.D. ; Rile, N.W.
Author_Institution :
Sandia Nat. Lab., Albuquerque, NM, USA
Abstract :
The application of numerical methods to electrically large, three-dimensional geometries typically requires the use of parallel-processing techniques. The distributed parallelization of the finite-element time-domain-finite-difference time-domain (FETD-FDTD) hybrid is described. An application is provided for antenna radiation on a realistic airframe. The parallelization procedure requires two domain decompositions: one for the structured, finite-difference grid, and the other for the unstructured, finite-element grid. The two grids communicate across the interface shown. The FETD method and the interface to FDTD are described, and the parallelization implementation is presented together with applications.
Keywords :
aircraft antennas; broadband antennas; finite difference time-domain analysis; finite element analysis; monopole antennas; parallel programming; spiral antennas; wire antennas; FETD-FDTD hybrid; airframe-mounted antennas; antenna radiation; broadband logarithmic spirals; distributed parallelization; electrically large 3D geometries; electrically large three-dimensional geometries; finite-difference time-domain; finite-element time-domain; hybridized finite-element time-domain method; interface; numerical methods; parallel finite-element time-domain method; parallel-processing techniques; structured finite-difference grid; thin-wire monopole antenna; unstructured finite-element grid; Boundary conditions; Finite difference methods; Finite element methods; Geometry; Laboratories; Partial differential equations; Sparse matrices; Stability; Surface waves; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2002. IEEE
Print_ISBN :
0-7803-7330-8
DOI :
10.1109/APS.2002.1018182
