[Viddesh]

Dear All,

I have been facing some dilemma in CFD post recently. I have simulated a steady state full 3D Impulse steam turbine analysis (with nozzles, 4 rotor rows, stators and extension domain) with the following parameters;
Inlet BC: 1.8 kg/s mass flow rate
Outlet BC: 0.25 bar Pressure
Inlet steam temp is 250 deg C
Rotor speed: 700 rpm
Heat Transfer model: Total energy [Incl. viscous work term] with high speed (compressible) heat transfer model turned on.
Turbulence model is SST
I have used frozen rotor interface for rotor stator interface.

Now coming to the point I'm having issues with;
1. I have extracted massflowave variables like temp, enthalpy, Mach no. etc. using the function calculator option in CFD post.
I have also plotted temperature contour on the same patch/Interface where I have used function calculator.

My observations (only w.r.t Temperature (as that is my concerned variable));
1. The value which function calculator returns for temperature at patch say above rotor1 (patch above rotor1 blades) is significantly lower than temperature contour plot of the same patch.

Thank you for any help provided.
Regards