Title :
Reduction of late time instabilities of the finite difference time domain method in curvilinear coordinates
Author :
Douvalis, V. ; Hao, Y. ; Parini, C.G.
Author_Institution :
London Univ., UK
Abstract :
Late time instabilities are always present when applying the FDTD method in general curvilinear coordinates. In this paper, the stability analysis is performed on local nonorthogonal FDTD (LNFDTD) and a novel time-subgridding scheme is developed to reduce instabilities so that the full characteristics of electromagnetic structures can be explored.
Keywords :
circular waveguides; finite difference time-domain analysis; mesh generation; stability; waveguide theory; FDTD method; LNFDTD; computational electromagnetics; electromagnetic structures; general curvilinear coordinates; late time instabilities; local nonorthogonal FDTD; stability analysis; time-subgridding scheme;
Conference_Titel :
Computation in Electromagnetics, 2002. CEM 2002. The Fourth International Conference on (Ref. No. 2002/063)
DOI :
10.1049/ic:20020197
