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April 5, 2023 at 11:41 am
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April 5, 2023 at 4:23 pm
Guilin Sun
Ansys EmployeeA1: 很快结束时因为仿真区内平均等效强度下降到了指定的autoshutoff min。这个数值是否合适,你可以看看时间监视器的频谱,看看有没有单个波长谐振很强,或者频域透射率曲线是否光滑。如果有很强的单波长谐振或者曲线不光滑,可以进一步减小autoshutoff min。
参见
Ansys Insight: 关于Auto shut off min &auto shut of max
Ansys Insight: 如何知道FDTD的仿真时间足够长
A2: 有可能感觉不靠谱,这是时间域,是多波长的混合结果。
尽管你只需要单个波长的结果,我还是建议你用一个宽谱(Override 光源波长)检查宽谱的透射率反射率,看看是否光滑。假设你选择的这个波长本来有很强的谐振,但是整个时间信号衰减很快,仿真也会很快结束,但是这个波长来说仿真时间太短。
另外,你可以同时监测反射和透射。
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