流固耦合问题求助
我在计算流固耦合中算到511步不能算了！！一共是800步。out file文件如下：请高手指教*** ERROR *** CODE ADF3069:
Unsuccessful during FSI iteration.
*************************************************************************************************************************
* E N D O F T I M E I N T E G R A T I O N *
*************************************************************************************************************************
ADFSI VERSION 8.3.1 (BUILT ON 03-03-2006)
FOR PROBLEM:*** NO HEADING DEFINED ***
LICENSED FROM A D I N AR & DINC.
*************************************************************************************************************************
* *
* S O L U T I O N T I M E L O G (IN SECONDS) *
* *
*************************************************************************************************************************
TIME USED IN SOLID MODEL........................................................ 363.34
TIME USED IN FLUID MODEL........................................................ 667.64
TIME USED IN COUPLING COMPUTATION............................................... 1121.75
T O T A L S O L U T I O N T I M E........................................... 2152.73
********************************************************************************************
S O L U T I O N T I M E I N F L U I D
********************************************************************************************
TIME USED IN INPUT PHASE........................................................ 1.21
TIME USED IN ASSEMBLY........................................................... 565.25
TIME USED IN SOLVER INITIATION.................................................. 0.01
TIME USED IN OUTPUT............................................................. 46.47
TIME USED IN MESH HANDLING...................................................... 54.71
T O T A LS O L U T I O NT I M EI NF L U I DM O D E L.................. 667.64
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*** ERROR *** CODE ADF3069:Unsuccessful during FSI iteration.
This message indicates that the solution procedure in FSI iteration is
unsuccessful. You could find out more information from the
<fluid>.log and <solid>.log files. Check the stress and displacement
residual history. If they indicate a converging behavior, you may
increase the maximum number of FSI iterations and allow it to
converge. If they indicate a diverging behavior, considering the choices
below:
• Always check the solutions obtained so far to see if they are
physically reasonable. Try to exclude possibilities of errors in
input data.
• Reduce the displacement relaxation factor if it is not too small.
• It is generally suggested that tolerances in fluid and solid models
are smaller than the tolerance for FSI convergence tolerance. If
you have not done it, make some adjusts.
• Perform direct computing rather than the iterative computing.
It is also important to refer to the suggestions under the topics
“Model preparation and testing” and “Formulation of fluid-structure interactions”. 这种每一个错误对应的详细解释应该在哪找呢 那个所谓的流体理论手册是什么呢 程序的安装目录中的Docs子目录下面就有tmg-f_84.pdf
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