流固耦合时cfx求解出错了

-一开始我是单独分析了流场，得到了稳定的结果，然后以那个结果作为耦合时的初始值，求解时报错了。下面是错误信息，各位大神，帮我看看这个出错时怎么回事，到底哪块出问题了。-
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| ERROR #002100061 has occurred in subroutine SERVE_CLIENTS. |
| Message: |
| The connection between this CFX process and an external process |
| has died unexpectedly. The following error was received: |
| External process : ANSYS |
| Error experienced : Read |
| |
| ** This error is fatal: Terminating ANSYS CFX Solver execution ** |
| Please review the output, error and log files from both the CFX |
| and external processes to determine the cause of the error. |
+--------------------------------------------------------------------+
+--------------------------------------------------------------------+
| An error has occurred in cfx5solve: |
| |
| The ANSYS CFX solver has terminated without writing a results |
| file. Command on host jsw01 exited with return code 0. |
+--------------------------------------------------------------------+
End of solution stage.
+--------------------------------------------------------------------+
| The following transient and backup files written by the ANSYS CFX |
| solver have been saved in the directory C:\Documents and |
| Settings\Administrator\Desktop\lulu model0\couple\couple_new_002: |
| |
| 0_full.trn |
+--------------------------------------------------------------------+
+--------------------------------------------------------------------+
| An error has occurred in cfx5solve: |
| |
| ANSYS Solver terminated with return code 256 |
+--------------------------------------------------------------------+
+--------------------------------------------------------------------+
| The results from this run of the ANSYS solver have been written to |
| C:\Documents and Settings\Administrator\Desktop\lulu |
| model0\couple\couple_new_002.ansys |
+--------------------------------------------------------------------+
+--------------------------------------------------------------------+
| The following user files have been saved in the directory |
| C:\Documents and Settings\Administrator\Desktop\lulu |
| model0\couple\couple_new_002: |
| |
| mon |
+--------------------------------------------------------------------+
This run of the ANSYS CFX Solver has finished.