mie 散射模拟，散射截面曲线不对

- May 1, 2023 at 9:56 am
  
  新妹高
  Subscriber
  
  Mie 散射，银纳米球JC模型，半径50nm,TFSFS光源200-700nm;fdtd mesh order为2;mesh精度1.5nm;分析组cross section得到散射和吸收截面。但是调试了很久，都没有得到一个光滑的曲线，不知道是什么原因
- May 1, 2023 at 5:38 pm
  
  Guilin Sun
  Ansys Employee
  
  建议根据网上例子修改。特别要检查材料拟合是否光滑。
  当你用细网格后，是否增加了PML离开散射体的距离？是否增加了PML层数？能否保证PML大致厚度在半个波长左右？
  我估计增加仿真区可能会有改善，很可能是PML反射造成的。
- May 2, 2023 at 8:13 am
  
  新妹高
  Subscriber
  
  我增加了PML的层数，就可以了。感谢老师！

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