流固双向耦合报错

Update failed for the Solution component in System Coupling.  The coupled update for system Fluid Flow (Fluent) threw an exception. The FLUENT application failed to initialize.

(DP 0) An unknown error occurred during solution.  Check the Solver Output on the Solution Information object for possible causes.

(DP 0) An unknown error occurred during solution.  Check the Solver Output on the Solution Information object for possible causes.

(DP 0) An unknown error occurred during solution.  Check the Solver Output on the Solution Information object for possible causes.

(DP 0) A solver failure occurred during the run in the Fluid Flow (Fluent) system Please do not save the project if you would like to recover to the last saved state.

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