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An approach for automatic grid generation in three-dimensional FDTD simulations of complex geometries

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5 Author(s)
Srisukh, Y. ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH ; Nehrbass, J. ; Teixeira, F.L. ; Lee, J.-F.
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The finite-different time-domain (FDTD) method has become a popular method in computational electromagnetics because of its simplicity, flexibility, and efficiency. However, the process of generating a three-dimensional (3D) FDTD grid can be time-consuming and error-prone when manually manipulating complex geometries. In order to expedite the generation of FDTD grids, computer-graphics-based methods can alternatively be used. Starting from the geometric description of the problem domain given by a CAD file, an FDTD grid with a specific spatial resolution can be automatically produced. A simple algorithm to this end is discussed, along with sample results.

Published in:

Antennas and Propagation Magazine, IEEE  (Volume:44 ,  Issue: 4 )