Abstract
The radiated electromagnetic (EM) flelds from a rotating current-carrying circular cylinder were numerically simulated in two dimensions using the method of characteristics (MOC), and the numerical results were presented in this paper. To overcome the di-culty of the grid cell distortion caused by the rotating cylinder, the passing center swing back grids (PCSBG) technique is employed in collaboration of MOC in a modifled O-type grid system. In order to have clear demonstration of radiated EM flelds, the circular cylinder is set to be evenly divided in radial direction into an even number of slices that are made of perfect electric conductor (PEC) and nonelectric nonmagnetic material, alternatively. The surface current is assumed to have a Gaussian proflle and to ∞ow uniformly along the axial direction on the PEC surface. The radiated electric and magnetic flelds around the cylinder were recorded as functions of time and reported along with the corresponding spectra which were obtained through proper Fourier transformation. Several fleld distributions over the whole computational space are also given.
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