Publications [#68102] of Qing H. Liu

Papers Published

1. Mei Chai and Tian Xiao and Gang Zhao and Liu, Q.H., A hybrid PSTD/FDTD method for multiscale problems, 2006 IEEE Antennas and Propagation Society International Symposium (IEEE Cat. No. 06CH37758C) (2006), pp. 676 -, Albuquerque, NM, USA
   (last updated on 2007/04/17)

   Abstract:
   In this paper, we further extend the hybrid technique, which is the combination of the pseudospectral time-domain (PSTD) method with a version of FDTD method, to combine the PSTD method with two versions of advanced FDTD methods, i.e., the alternating direction implicit conformal FDTD (ADI-CFDTD) and CFDTD methods for full 3D problems. Both CFDTD and ADI-CFDTD methods are second-order accurate in spatial discretization; the former is ideal for the intermediate scale where the geometrical feature size is approximately between 1/20 of a wavelength to about one wavelength, while the latter is ideal for the fine scale below the intermediate scale, and the PSTD method is ideal for the coarse scale above the intermediate scale. Such a hybrid method is close to being optimal in terms of its accuracy and efficiency. Numerical results are shown to demonstrate the effectiveness of this hybrid PSTD/FDTD method

   Keywords:
   computational electromagnetics;finite difference time-domain analysis;spectral analysis;