CST MWS運算錯誤

原本我的網格切割數(shù)是11KK，可以順利運算完成
但細切到44KK就會出現(xiàn)如下訊息
The calculation seems to be unstable! A possible source of instability could be given by inaccurate definition of internal waveguide ports. Please consider to increase the dimension or shield your waveguide ports.

網格數(shù)切太細會有這樣的問題嗎??
請指教謝謝

給Waveguide Port加shielding試試看。
CST MWS幫助文件《Waveguide Port》：
Electric shielding: Activate the check box to let the boundary of the waveguide port be treated as a perfectly shielding (PEC) frame.
CST MWS幫助文件《Special Solver Parameters - General》：
Electric shielding for all ports: A perfectly shielding (PEC) frame surrounding each waveguide port region will be added. This option causes higher reflections at ports. Therefore, it should only be used if a calculation has become unstable.

我知道CST2012有” Electric shielding for all ports”功能
但是CST2010我找不到” Electric shielding for all ports”
該如何設定給Waveguide Port加shielding
請指教謝謝

在求解器的special里面設置

Thankstry it!!