A Stability Improvement Technique Using PML Condition for the Three-Dimensional Nonuniform Mesh Nonstandard FDTD Method

作者：Ohtani Tadao; Kanai Yasushi^*; Cole James B

来源：IEEE Transactions on Magnetics, 2013, 49(5): 1569-1572.

DOI：10.1109/TMAG.2013.2238613

• FDTD methods
• nonstandard FDTD (NS-FDTD) methods
• nonuniform mesh
• perfectly matched layer (PML)

We propose a technique to improve the stability of three-dimensional (3D) nonuniform mesh nonstandard FDTD (NS-FDTD) calculations. To mitigate the numerical instability arising from the connection of different-sized meshes, our method combines the usual interpolation fields and perfectly matched layer (PML) condition at mesh interfaces. We examine a connection for a mesh size ratio of 3: 1, and show numerically that our technique improves the stability of 3D NS-FDTD calculation on nonuniform meshes. Our technique is also applied to analyze the fields around a periodic slot panel.

• 出版日期2013-5