[建模]求问CST MWS系统部分尺寸差别太大时如何处理？

需要在一个横截面1X1m长20m的波导里插入一根长1dm的天线，直接模拟的话天线尺寸与波导相差太大，网格的最大尺寸比太大，计算极慢，请问大侠们怎么解决。本人新手，求说得详细一 .. *Xd_=@L&B  
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或者如何设计一个球面波源，跳过天线的模拟过程

试试看subgridding吧。

1dm？1cm？可以直接用离散端口代替天线

hefang:试试看subgridding吧。 (2013-10-26 21:15)  Yz2{LW[K  

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我按照教程进行了局部网格的划分，选了subgridding，但是出了错如下，怎么查在哪儿出了错呀： abICoP1zQ  
Subgrid mesh generation K5!";V  
Local mesh settings overlap for the shapes "single dipole/PEC:Driven Element" and "component1:solid2". T/wM(pr'   
Using settings of shape "single dipole/PEC:Driven Element" within overlaping areas Mu'^OX82  
Starting adaptive port meshing. m|[\F#+C  
Mode calculation for port 2: |7QVMFZ  
At least one propagating mode at port 2 is not considered in the time domain calculation! (At least one mode shares the same beta with considered mode(s) -> degeneration).It might be better to increase the number of modes at port 2. More...
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Pass 1 successfully completed. -_2Dy1  
Adaptive port meshing finished. H}h~~7E  
Matrix computation (PBA) 'f-
  
Hexahedral mesher terminated abnormally. D|TLTF"  
Error in calculating solver matrix %Lp2jyv.  
Solver run aborted. Ql~#((K  
2 warnings occurred.

做了个模型，其中有根天线尺寸特别小，划分了局部网格，选了subgridding，出了错如下，可能是哪里出了错啊？ 9Yn)t#G'`F  
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描述:错误

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Subgrid mesh generation !x8kB Di,  
Local mesh settings overlap for the shapes "single dipole/PEC:Driven Element" and "component1:solid2". "ct58Y@  
Using settings of shape "single dipole/PEC:Driven Element" within overlaping areas pD[pTMG@$  
Starting adaptive port meshing. z<i,D08|d  
Mode calculation for port 2: `4skwvS=  
At least one propagating mode at port 2 is not considered in the time domain calculation! (At least one mode shares the same beta with considered mode(s) -> degeneration).It might be better to increase the number of modes at port 2. More... s@PLS5d"  
Pass 1 successfully completed. 5~QTg  
Adaptive port meshing finished. j-QGOuvW  
Matrix computation (PBA) /eb-'m  
Hexahedral mesher terminated abnormally. eKyqU9  
Error in calculating solver matrix Wa<-AZn
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Solver run aborted. xdqK.Z%  
2 warnings occurred. TVYz3~m  

上传模型，请大神们指导，跪谢！ "
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为了大神们看的方便，再上传一个有结果的： 6kC)\uy  
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我的模型在这里 能不能帮忙看下错在哪儿，多谢多谢！ 方形长管-末端探针-单级天线-外部空气_2.zip (1925 K) 下载次数:9

hawk8969:1dm？1cm？可以直接用离散端口代替天线 (2013-10-29 14:59)  MIMPJXT#.  

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直接在1mX1m的面上加离散端口吗？出来的可以近似是球面波？