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Improved-accuracy algorithms for tim...
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The Ohio State University.
Improved-accuracy algorithms for time-domain finite methods in electromagnetics.
紀錄類型:
書目-電子資源 : 單行本
正題名/作者:
Improved-accuracy algorithms for time-domain finite methods in electromagnetics./
作者:
Wang, Shumin.
面頁冊數:
201 p.
附註:
Source: Dissertation Abstracts International, Volume: 64-10, Section: B, page: 5140.
Contained By:
Dissertation Abstracts International64-10B.
標題:
Engineering, Electronics and Electrical. -
電子資源:
Download fulltext (下載全文)
ISBN:
0496566504
Improved-accuracy algorithms for time-domain finite methods in electromagnetics.
Wang, Shumin.
Improved-accuracy algorithms for time-domain finite methods in electromagnetics.
- 201 p.
Source: Dissertation Abstracts International, Volume: 64-10, Section: B, page: 5140.
Thesis (Ph.D.)--The Ohio State University, 2003.
Two novel finite-difference time-domain (FDTD) algorithms are proposed to reduce numerical dispersion error. One is to minimize the dispersion error at arbitrary angles. The other is to minimize the maximum dispersion error for all angles. Generic filtering schemes are further developed to improve the performances in broadband simulations. To deal with very large-scale, locally fine problems, the accuracy and stability of FDTD subgridding schemes are numerical studied. A systematic approach is developed to optimize the spatial interpolation coefficients. Unstructured/structured hybrid mesh is further examined as an alternative approach. Composite elements and implicit FDTD method are proposed to facilitate mesh generation and hybridize with Finite-Element Time-Domain (FETD) methods respectively. The stability of FETD/FDTD hybrid methods and the effectiveness of using FDTD as a predictor for FETD, are also examined. Finally, we develop two novel Perfectly Matched Layers (PML) implementations for Alternating-Direction Implicit (ADI) and FETD methods respectively, which exhibit largely reduced reflection errors. In addition, the PML for FETD shows stable late-time behavior in our numerical tests.
ISBN: 0496566504Subjects--Topical Terms:
170927
Engineering, Electronics and Electrical.
Improved-accuracy algorithms for time-domain finite methods in electromagnetics.
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Download fulltext (下載全文)
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