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 re...
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ISBN:
(纸本)9781424449682
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.
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