CST set boundary as PML

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Hi everyone,

I'm new to CST so I'm confused by it's boundary settings. It seems that the boundary can only be set at 1-20 wavelengths away from my model. How can I select a surface in my geometry and set it to be a PML boundary? Otherwise I guess the wave will be reflected in my model and won't be absorbed.
 

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You can use open boundary, not open (add space). The open boundary extends the touching geometry virtually to infinity by using a perfectly matched layer (PML) boundary.
 
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hhhunter said:
You can use open boundary, not open (add space). The open boundary extends the touching geometry virtually to infinity by using a perfectly matched layer (PML) boundary.
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Thank you so much!


Sorry but I still have a problem: after setting the boundary to open, it seems that the boundary is a smallest cube containing my model, because it use xmin, ymin, etc. But my model is actually a column, so there's area between my model and the boundary. Does this still work?
 
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