fluent 和 transient structural耦合，在system coupling求解到85%时总是报错，报错内容如下

3.Update failed for the Solution component in System Coupling.  Error moving file from D:\Users\FSI_analysis\Desktop\ansys\lgoh\lgoh2_files\dp0\FFF-2\Fluent\Solution.trn to D:\Users\FSI_analysis\Desktop\ansys\lgoh\lgoh2_files\progress_files\dp0\FFF-2\Fluent\Solution.trn. 另一个进程正在使用此文件，因此该进程无法访问此文件。

2.(DP 0) A solver failure occurred during the run in the Fluid Flow (Fluent) system

1.(DP 0) System coupling run completed with errors.  Fluid Flow (Fluent) (Solution) reported: Fluent encountered fatal error after sync point Solve:Cortex received a fatal signal (SEGMENTATION VIOLATION). Please do not save the project if you would like to recover to the last saved state.

请问这是什么原因呢该怎么解决？