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Floating point exception in MRFsimplefoam with K-E turbulent model

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Old   December 5, 2013, 16:17
Default Floating point exception in MRFsimplefoam with K-E turbulent model
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Dear all,
I'm new in openfoam.
I have been trying to run MRFsimpleFoam for rotating propeller.
But something went wrong.

It says:
Floating point exception (Core dumped)

but i dont know where the problem is?
can someone tell me where/why it happened,please.
here is my case (65MB):

Thank you in advance.
best regards,
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