# Total Temperature in a Rotating Frame

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 September 10, 2005, 11:37 Total Temperature in a Rotating Frame #1 Paul Lewis Guest   Posts: n/a Hi Everyone, I've noticed in the rotating frame of my simulation the total temperature in some places is less than the temperature at the same point. I would expect the solver to calculate To = T + V^2 / 2Cp, and therefore To > T (total temp greater than static temp). The problem doesn't occur in the stationary frame of my simulation, has anyone seen anything similar before? I'm using CFX 5.7 Regards Paul

 September 14, 2005, 14:47 Re: Total Temperature in a Rotating Frame #2 Neale Guest   Posts: n/a "Total Temperature" is based on Rothalpy. Your formula is not correct. It should be To = T + 0.5*(V_rel^2-V_spin^2)/Cp. This can be less than static Temperature if V_spin is large. See the documentation on "Rotating Frame Quantities" in the Solver Theory Manual for more info.

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