Hey everyone!

I have a serious problem understanding background conditions in CST Studio and how the surrounding space affects the simulation results.

When I don't add any space my results seem to be totally wrong. By adding a little bit of space the results seem to be more realistic but when I increase the surrounding space again (no matter in which direction and how much) my results change completley and seemingly random and they don't approach any value. 

Are there any "normal" settings I should use? Or does anyone can help me how to choose my background properties correctly? What things do I have to pay particular attention to? 

Best regards

Sarah

CST Studio Suite ​​​​​​​