3D-TLM对称凝聚节点模型吸收边界条件研究

1992 IEEE Microwave Symposium Digest MTT-S Pub Date : 1992-06-01 DOI:10.1109/MWSYM.1992.187989

Z. Chen, M. Ney, W. Hoefer

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引用次数: 4

摘要

传输线矩阵法是一种基于电磁场时空采样的数值方法。与时域有限差分(FD-TD)方法一样，在模拟开放结构时，需要吸收边界条件截断计算区域。FD-TD吸收边界条件已适应并实现在3D-TLM对称凝聚节点模型中。结果表明，由于3D-TLM凝聚节点网格的伪模态可能导致不稳定。

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Study of absorbing boundary conditions in the 3D-TLM symmetrical condensed node model

The TLM (transmission line matrix) method is a numerical technique based on temporal and spatial sampling of electromagnetic fields. As with the FD-TD (finite-difference time-domain) method, the absorbing boundary conditions are needed to truncate computational regions when open structures are simulated. The FD-TD absorbing boundary conditions have been adapted to and implemented in the 3D-TLM symmetrical condensed node model. It is demonstrated that instability may occur due to spurious modes of the 3D-TLM condensed node mesh.<>

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1992 IEEE Microwave Symposium Digest MTT-S

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