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how to set the adaptive passes and Delta-S for convergence!

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dentai

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I am simulating an EBG structure. In the simulation, I use 2 kinds of boundary condition. With the first kind, the convergence is ok. But when I use another kind of boundary condition, there is no convergence (with the same settings as the former simulation). (The setting for convergence: number of adaptive pass = 20, delta-s=0.02)
I tried to change the delta-s to 0.01 but nothing changed, solution is not convergent.
Anyone helps me solve this problem.
Thank you.
 

051120054

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delta-s 0.01 is harder to be convergent than 0.02.

upload your project will be helpful.
 

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