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In this paper, the implementation of UPML in DGTD is presented. Based on equations of UPML and the characteristics of the unstructured grid, time stepping strategy is given. The numerical results of radiation and scattering are demonstrated with good absorption of UPML in DGTD.
Based on the analytical integral method of PO algorithm, the analytical integral method of TDPO method is given in this paper, which can be applied to the case of differential Gauss pulse incidence. The computational efficiency of the TDPO algorithm is significantly improved by this method. Then, the idea of system transfer function is adopted, with this idea the time domain waveform of any kind of...
The scalar wave formulation of computation region and the first-order absorbing boundary condition are given by Maxwell's equations. Then the residuals of entire computation region are presented. The weak form solutions of wave equation are described by take integration over computation domain and its boundary. According to the principle of equivalence, the implementation of extrapolation from 2D...
A new method of the total-scattering field of Finite Element Time Domain (FETD) based on Newmark method to introduce plane wave is presented in this paper. And the scheme of far field extrapolation is given. Finally, the RCS of cylinder in TE case are computed by FETD method, and the results of MoM and FDTD method are given for comparison. The numerical results illustrate the feasibility and correctness...
The Galerkin solution of two-dimensional TE wave equation is derived from the two-dimensional vector wave equation by using basis (interpolation) functions defined in each element. And then, considering with the first-order absorbing boundary condition the time-domain recursive formulation is obtained by using Newmark-β method . Finally, a numerical example is given to illustrate the feasibility of...
The computation region is divided into total and scattered field regions, total and scattered field scalar wave formulation are given according to Maxwell's equations and first-order absorbing boundary condition. Then the residuals of entire computation region are given. The weak form solutions of wave equation are given by take integration over computation domain and its boundary. Finally, a numerical...
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