A Nodal Discontinuous Galerkin Time-Domain Method Based on Wave Equation

An improved incident‐wave formulation for broadband electromagnetic scattering by discontinuous Galerkin time‐domain method

“…The discontinuous Galerkin time-domain (DGTD) method is a relatively new method for computational electromagnetics (CEM) and has grown in popularity in recent years. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] DGTD is derived from the finite elements time domain (FETD) 19 and finite volume time domain (FVTD). 20 In DGTD, two important techniques are integrated, that is, the domain decomposition method (DDM) 21 used in each element and the interior penalty numerical flux 22 for satisfying the weak boundary conditions.…”

“…Hence, DGTD is more accurate and flexible than FDTD in geometric modeling. To solve the EM scattering problems, the fields are expanded by nodal basis function 1,3 and tested by Galerkin's method. The two Maxwell's curl equations can be transformed into six scalar equations, which are solved on each element.…”