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三维非均匀电大目标散射的有限元撕接区域分解法计算

Keywords: 有限元撕接区域分解法,完全匹配吸收层,电磁散射,非均匀电大目标

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Abstract:

针对非均匀电大目标的散射问题,将有限元撕接区域分解方法(finiteelementtearingandinterconnecting,FETI)应用于非均匀电大目标散射的精确计算模型.该计算模型以各向异性完全匹配吸收层作为吸收边界.数值实验表明,该计算模型比一般吸收边界条件模型精度高.更为重要的是,虽然该模型由于使用各向异性完全匹配吸收层导致计算效率略有降低,但降低十分有限,有限元撕接区域分解方法对于电大尺寸目标的该模型仍然具有很高的计算效率.结果表明,有限元撕接区域分解方法是计算非均匀电大目标散射的一种有效方法.

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