KNOWN ISSUE: Pitch angle calculation incorrect when initial mesh spans the theta = pi plane (Class 3 Error)

The CFX-Solver may calculate the pitch angle incorrectly when the initial mesh spans the plane where the theta coordinate is equal to pi (or -pi).

The new pitch calculation algorithm does not properly check and correct for this scenario.

The pitch calculation can be reverted to use the old algorithm by setting the expert parameter "ggi dtheta mode = 1".

ANSYS CFX Release 12.1. A custom executable for ANSYS CFX Release 12.0 is available on request.

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