Comparison of errors and stability in FDTD and FVTD

[摘要] The methods of finite-difference time-domain(FDTD) and finite-volume time-domain (FVTD) are wellknown techniques for solving electromagnetic problems.While for FDTD a number of commercial codes is availablethere are only few based on FVTD. However, FVTD hasadvantages since it allows completely unstructured meshes.This paper 1. deals with the principle errors made in both approachesand 2. gives a theoretical comparison of the (local)stability of an FVTD scheme as opposed to the conventionalYee-scheme commonly used in FDTD. Finally the principlesof a new FVTD program is presented. Its capabilities aredemonstrated by the field of an antenna array.

[学科分类] 电子、光学、磁材料