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May 13, 2022 at 7:46 am
405700210050
Subscriber这是一个LED模型,LED的四周用金属铝进行包裹,偶极子设置在MQW(蓝色)的中心,如图所示(图示只包裹了其中一个侧壁)
May 13, 2022 at 9:30 pmGuilin Sun
Ansys Employee“因为参考 Understanding dipoles in non-homogeneous materials 这篇文章,金属壁被等效为一个与金属壁处于相同位置、取向合适的偶极子源,如图所示:”
你可能还需要好好理解一下等效的意思:那是说当一边是理想金属时,实际相当于两个偶极子在自由空间辐射,结果有相互干涉,你做一个简单仿真:一个边界用Metal,在上面用监视器看分布,再比较用PML的结果你就清楚了。
“请问在这种设置下,图中监视器收集到的电场分布图像是否是准确的?”
应该是正确的,因为此时监测的是在有实际金属情况下的偶极子辐射(实际还有周围的材料)。与一般光源不同,偶极子的实际辐射功率和远场Pattern与周围结构、材料有关。
多说一点:器件有多大?实际仿真能包括LED的外界面(与空气的界面)吗?如果比较小,则可以包括;如果需要太多的仿真资源,但是因为尺寸大可能边界对偶极子影响小则可以用PML减小仿真区。你可以测试比较一下。Viewing 1 reply thread- The topic ‘关于偶极子源周围存在金属壁的模拟问题’ is closed to new replies.
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