[raj aero]

hello everyone,
i am doing transient analysis for predicting thermodynamic cycle of stirling heat pump. in which i have two moving body (piston and displacer).i compiled the UDF for piston and displacer motion. but, when i preview the mesh motion,the mesh is moving good up to some time step. after that i got the following error. can anyone help me to solve this error.

Thanks in advance....

"Updating mesh to time 1.40000e-03 (step = 00014)...

Node 1: Process 4976: Received signal SIGSEGV

Node 0: Process 5848: Received signal SIGSEGV.

MPI Application rank 2 exited before MPI_Finalize() with status 2
The fl process could not be started.

===============Message from the Cortex Process==

Fatal error in one of the compute process

Error: Cortex received a fatal signal (unrecognized signal).
Error Object: ()