August 29, 2022 at 8:49 amdjihad-amina.djemmahSubscriber
I have a question about the boundary conditions.
I am simulating a 3D structure composed of 2 cubic resonators, the first one is big and the second one is small as shown in the figure.
My structure is periodic along the y-axis.
If I use PBC, will there be a mirror effect i.e. my structure reverts to a big resonator, a small resonator followed by a small resonator, and a big resonator instead of big then small?
Waiting for your reply.
Thank you in advance
August 29, 2022 at 4:45 pmGuilin SunAnsys Employee
This might be related to the fundamental of the periodic boundary conditions. Mathmatically, f(y+d)=f(y). this means the unit cell repeats its self, by shifting a period from each other. In your case ,suppose currently this is the center unit. for the +1 unit, it begins from the larger and then the smaller cube.eg, the whole device will be "large, small;large, small;..."
It is just a shift, not a refection.
You can group them, then use "array" to create 3 units so you can see what it looks like:
if you have questions on how to use the "array" function and what do those parameters mean, please write a new post.
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