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首页> 外文期刊>Journal of Computational Physics >A hybrid finite/boundary element method for periodic structures on non-periodic meshes using an interior penalty formulation for Maxwell's equations
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A hybrid finite/boundary element method for periodic structures on non-periodic meshes using an interior penalty formulation for Maxwell's equations

机译:非周期网格上周期结构的混合有限/边界元方法,使用麦克斯韦方程组的内部惩罚公式

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摘要

This paper presents a hybrid finite element/boundary element (FEBE) method for periodic structures. Periodic structures have been efficiently analyzed by solving for a single unit cell utilizing Floquet's theorem. However, most of the previous works require periodic meshes to properly impose the boundary conditions on the outer surfaces of the unit cell. To alleviate this restriction, the interior penalty method is adopted and implemented in this work. Also, the proper treatment of the boundary element part is addressed to account for the non-conformity of the boundary element mesh. Another ingredient of this work is the use of the efficient boundary element computation, accelerated by the Ewald transformation for the calculation of the periodic Green's function. Finally, the method is validated through examples which are discretized without the constraint of a periodic mesh.
机译:本文提出了一种用于周期结构的混合有限元/边界元(FEBE)方法。周期结构已通过使用Floquet定理求解单个晶胞而得到有效分析。但是,大多数先前的工作都需要周期性的网格,以将边界条件适当地施加到晶胞的外表面上。为了减轻这种限制,这项工作采用并实施了内部惩罚方法。而且,解决了边界元素部分的适当处理以解决边界元素网格的不整合问题。这项工作的另一个要素是使用有效的边界元素计算,并通过Ewald变换加快了计算周期格林函数的速度。最后,该方法通过实例进行了验证,该实例在没有周期性网格约束的情况下被离散化。

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