Title :
A comparative study of the accuracy of various time domain nonorthogonal mesh methods
Author :
Ray, S.L. ; Rambo, P.W.
Author_Institution :
Lawrence Livermore Nat. Lab., CA, USA
Abstract :
A number of numerical methods have been developed for solving Maxwell´s equations, with dispersion analysis being the standard method of studying the accuracy of discrete wave propagation methods. Typical skewed mesh dispersion results have been obtained for the quadrilateral mesh methods described by R. Holland (1983). Several different triangle-based schemes are examined. Three different discretizations are compared: a Voronoi mesh finite-difference technique, the modified finite-volume method and the discrete surface integral technique. The results obtained indicate that there is no clear-cut reason based on dispersion errors to prefer the triangle-based schemes considered to the quadrilateral methods (or vice versa).<>
Keywords :
Maxwell equations; electromagnetic wave propagation; finite difference time-domain analysis; Maxwell´s equations; Voronoi mesh finite-difference technique; accuracy; discrete surface integral technique; discrete wave propagation methods; dispersion analysis method; dispersion errors; modified finite-volume method; numerical methods; quadrilateral mesh methods; skewed mesh dispersion; time domain nonorthogonal mesh methods; triangle based methods; Anisotropic magnetoresistance; Difference equations; Dispersion; Finite difference methods; Frequency; Information analysis; Laboratories; Length measurement; Maxwell equations; Writing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221488
