[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 .. 'u{DFMB-A  
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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)  bM@8[&ta  

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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： 1r:i'cWh  
Subgrid mesh generation z5tOsU  
Local mesh settings overlap for the shapes "single dipole/PEC:Driven Element" and "component1:solid2". n0 q$/Y.  
Using settings of shape "single dipole/PEC:Driven Element" within overlaping areas dj}y6V&  
Starting adaptive port meshing. oS0rP'V^  
Mode calculation for port 2: [}*xxy   
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... B5R/GV  
Pass 1 successfully completed. 1yK=Yf%B  
Adaptive port meshing finished. =w,cdU*  
Matrix computation (PBA)
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Hexahedral mesher terminated abnormally. bVgmjt2&>  
Error in calculating solver matrix [TaYNc!\  
Solver run aborted. paYvYK-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？ &YP#M|  
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描述:错误

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Subgrid mesh generation $L4/I!Yf  
Local mesh settings overlap for the shapes "single dipole/PEC:Driven Element" and "component1:solid2". zkM"cb13q/  
Using settings of shape "single dipole/PEC:Driven Element" within overlaping areas #PvB/3  
Starting adaptive port meshing. }Y(]6$uS  
Mode calculation for port 2: 3{%LS"c  
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... Qq-"Cg@-/  
Pass 1 successfully completed. 4S0>-?{  
Adaptive port meshing finished. 2Tav;LKX  
Matrix computation (PBA) Id'RL2Kq*&  
Hexahedral mesher terminated abnormally. !4"sX+z9  
Error in calculating solver matrix Rn%N&1 Ef  
Solver run aborted. ',7??Q7j&v  
2 warnings occurred. t,)N('m}=  

上传模型，请大神们指导，跪谢！ X1~1&:V,<  
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为了大神们看的方便，再上传一个有结果的： 0a"c2J  
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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)  mz@T  

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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？