【作者】 李明之； 刘友键； 王长清； 徐承和；

【Author】 LI,Mingzhi,LIU,Youjian,WANG,Changqing,XU,Chenghe (Department of Electronics,Peking University,Beijing 100871,P.R.China)

【机构】 北京大学电子学系；

【摘要】 本文提出用SBR-FDTD混合方法处理腔体内部和腔体外部的耦合问题。在该方法中,腔体内的电磁场用FDTD方法计算,腔体外的电磁场用SBR方法计算,在腔体口面处考虑二者的耦合效应。我们用该混合方法计算了带有角反射面的腔槽二维模型的电磁散射并把计算结果与FDTD和MoM法的结果进行了对照,证明己达到了较好的精度。SBR-FDTD混合方法为最终在三维上解决进气道与机身之间的耦合问题打下了基础。更多还原

【Abstract】 The hybrid SBR-FDTD method is introduced to solve the coupling problem between the interior and exterior of cavity.In this method,FDTD method is used to compute the electromagnetic field in the cavity and the outside field is computed by SBR method.The coupling between this two parts is considered on the aperture.A 2D model cavity with corner reflector outer shape was calculated by this hybrid method and the results agreed well with those gained by FDTD method.SBR-FDTD hybrid method will be used to treat the coupling between the inlet and fuselage of aircraft on 3D.更多还原