Title :
Increasing accuracy of finite difference methods in nonorthogonal irregular grids
Author :
Wiktor, Michael ; Mrozowski, Michael
Author_Institution :
Dept. of Electron., Telecommun. & Informatics, Tech. Univ. of Gdansk, Poland
Abstract :
This paper discusses a discrete form of wave equation applied to nonorthogonal and irregular grids. Modifications to the standard finite difference algorithm are introduced, preventing substantial loss of accuracy when the grid is deformed. The algorithm is used to find cutoff frequencies of rectangular waveguides rotated with respect to the mesh.
Keywords :
computational electromagnetics; finite difference methods; frequency response; rectangular waveguides; wave equations; FD algorithms; deformed grid accuracy loss; increased accuracy finite difference methods; mesh rotated waveguide; nonorthogonal irregular grids; rectangular waveguide cutoff frequencies; wave equation discrete form; Boundary conditions; Cutoff frequency; Finite difference methods; Frequency domain analysis; Integral equations; Maxwell equations; Partial differential equations; Rectangular waveguides; Shape; Transmission line matrix methods;
Conference_Titel :
Microwaves, Radar and Wireless Communications, 2002. MIKON-2002. 14th International Conference on
Print_ISBN :
83-906662-5-1
DOI :
10.1109/MIKON.2002.1017903
