Application of an offset mesh for the transient, explicit finitedifference analysis of the perfectly conducting rectangular plate
Abstract
In this paper an offset mesh is used for the transient finitedifference analysis of the rectangular plate. An explicit, or timemarching, finitedifference approximation for the electric field integral equation is used. It is demonstrated that the offset mesh represents a more natural discretization for obtaining the current response of the plate than the standard (nonoffset) mesh typically used, but a stability criterion which differs from the one associated with the standard scheme is required. Results obtained from both the standard mesh and the offset mesh are compared, and the difference in the stability criterion required for each mesh is discussed.
 Publication:

Radio Science
 Pub Date:
 October 1985
 DOI:
 10.1029/RS020i005p01031
 Bibcode:
 1985RaSc...20.1031R
 Keywords:

 Computational Grids;
 Electric Field Strength;
 Electromagnetic Scattering;
 Finite Difference Theory;
 Rectangular Plates;
 Transient Response;
 Current Density;
 Integral Equations;
 Matrices (Mathematics);
 Neumann Problem;
 Numerical Stability;
 Time Marching;
 Communications and Radar;
 Electromagnetics: Numerical methods;
 Electromagnetics: Transient and time domain