### 6.7.2. Guidelines for using the Time Transformation Feature

- Pitch ratio:

  - There is a limit on the range of pitch-ratio allowed when using the Time Transformation method. This range is strongly dependent on the Mach number associated with the rotor rotational speed (or signal speed in the case of an inlet disturbance problem). The pitch-ratio limit is defined in Time Transformation.

- Solution Monitoring

  - The Time Transformation method does not support monitor points that use CEL expressions. Instead, you can use solution variables (pressure, temperature, and so on) to monitor the solution.

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