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Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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SIMULATION OF SCATTERED EM FIELDS FROM ROTATING CYLINDER USING PASSING CENTER SWING BACK GRIDS TECHNIQUE IN TWO DIMENSIONS

By M. Ho

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Abstract:
In this paper, a new numerical technique, passing center swing back grids (PCSBG's) for the resolution of the grid distortion difficulty due to the rotational motion of objects is introduced. This proposed swing-back-grids approach alongside of the method of characteristics (MOC) is developed to solve EM scattering problems featured with rotating objects. The feasibility of such combination is apparent from the fact that MOC defines all field quantities in the centroid of the grid cell. The scattered EM fields from a rotating circular cylinder under the excitation of an EM pulse are predicted in two dimensions and the electric field distributions recorded at several time instances are demonstrated. In order to confirm that the cylinder is rotating and scattering EM fields simultaneously, the circular cylinder is uniformly divided into an even number of slices with one perfect reflector and one non-reflector alternatively since a rotating circular cylinder causes no relativistic effects.

Citation:
M. Ho, " simulation of scattered EM fields from rotating cylinder using passing center swing back grids technique in two dimensions ," Progress In Electromagnetics Research, Vol. 92, 79-90, 2009.
doi:10.2528/PIER09030302
http://www.jpier.org/PIER/pier.php?paper=09030302

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