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題 名 | A Multilevel Subgridding Scheme for Two-Dimensional Finite-Difference Time-Domain Method=多層次次網格架構二維時域有限差分法 |
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作 者 | 張景程; 鄭士康; | 書刊名 | 國立臺灣大學工程學刊 |
卷 期 | 88 2003.06[民92.06] |
頁 次 | 頁23-27 |
專 輯 | 「電機工程」專輯 |
分類號 | 448.6 |
關鍵詞 | 時域有限差分法; 次網格; Finite-difference time-domain method; Subgridding; |
語 文 | 英文(English) |
中文摘要 | 時域有限差分法(Finite-Difference Time-Domain,FDTD)已廣為應用於解算電磁問題。但應用此一方法於含有微小架構或電磁場強度變化快速之區域時,其準確度較差;次網格(Subgridding)為常用改進法之一。本論文提出一多層次次網格之新演算法以增進次網格法之效率。此一新演算法與傳統之一階次網格法比較,有較平滑之轉換,且有更高之精確度。若干二維散射問題將應用此一演算法分析計算,以驗證此一演算法之準確性及效率。 |
英文摘要 | The Finite-Difference Time-Domain (FDTD) method has being very popular in solving electromagnetic problems. However, for those problems that contain small structures or strongly varying fields, subgridding would be one of the ways to improve the performance of the conventional FDTD method. To expand the power of subgridding, a multilevel subgridding scheme is developed. This new scheme can provide smoother transitions than the conventional one-level subgridding scheme, and achieve better performance. This multilevel subgridding scheme will be described in this paper. Some TE and TM scattering problems are solved for verification. |
本系統中英文摘要資訊取自各篇刊載內容。