### 16.2.6. Variables Relevant for Calculations with a Rotating Frame of Reference

The following table contains a list of variables (with both long and short variable names) that can be used when working with a rotating frame of reference. For an explanation of the column headings, see List of Field Variables.

Long Variable Name | Short Variable Name | Units | Availability | Definition
--- | --- | --- | --- | ---
Total Pressure in Stn Frame | ptotstn | [kg m^-1 s^-2] | 2 A, C, M, P, R, TS | The velocity in the rotating frame of reference is defined as: where is the angular velocity, is the local radius vector, and is velocity in the stationary frame of reference. For details, see Rotating Frame Quantities in the CFX-Solver Theory Guide.
Total Temperature in Stn Frame | Ttotstn | [K] | 2 A, C, DT, M, P, R, TS
Total Enthalpy in Stn Frame | htotstn | [kg m^2 s^-2] | 2 A, C, M, R, TS
Mach Number in Stn Frame | Machstn | [ ] | 1 A, C, M, R, TS
Velocity in Stn Frame | velstn | [m s^-1] | 1 A, C, M, R, TS

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