CHARACTERISTIC-BASED, TIME-DEPENDENT MAXWELL EQUATION SOLVERS ON A GENERAL CURVILINEAR FRAME

Four cell-centered, finite-volume characteristic-based procedures for solving time-dependent, three-dimensional Maxwell equations on a gener al curvilinear frame are developed and implemented. On a spherical coo rdinate system, these methods generate simulations of an oscillating e lectric dipole without wave reflection from the truncated computationa l domain. Through a comparative study, it is established that an upwin d-biased third-order scheme demonstrates less dispersive and dissipati ve errors than second-order schemes.