Title :
A novel subgridding technique for unconditionally stable time domain method
Author :
Huang, Zhenyu ; Pan, G.
Author_Institution :
Arizona State Univ., Tempe, AZ, USA
Abstract :
In this paper, a new subgridding technique based upon HSG and USTD is developed. Due to the unconditional stability of USTD, the synchrousness of the field update in coarse and fine grid regions are realized, which reduces the coding complexity and suppressed the late time instability. Comparing to the method in [J.P. Berenger, 2006], our method not only has the merits of arbitrarily large spatial ratio and negligible numerical reflection, but also eliminates the drawback of late time instability.
Keywords :
antenna theory; Huygens subgridding; coarse grid region; coding complexity; fine grid region; late time instability; numerical reflection; subgridding technique; unconditional stability; unconditionally stable time domain method; Finite difference methods; Numerical stability; Power system stability; Stability analysis; Teleportation; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5562005
