# Temperature distribution for gas turbine inlet conditions

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 February 19, 2012, 09:27 Temperature distribution for gas turbine inlet conditions #1 New Member   PB Join Date: Jan 2012 Location: UK Posts: 6 Rep Power: 7 Sponsored Links Hi all, Is anyone aware of a way that I can model a region of high temperature at the inlet face of my gas turbine blade simulation? I have a sliding mesh simulation with a stator in front of a rotor and would like to vary the temperature gradient on the inlet flow at the stator to see the effect that it will have on the blades. Ideally I am looking to simulate a region in the centre of my square inlet face that is hotter than the surroundings as in gas turbines there is typically a variation in the temperature gradient as the hot gas hits the blades. I have googled only to find a very complex C++ programing method and I feel this is too advanced for what I need to do. Any suggestions will be greatly appreciated AeroGirl.

 February 19, 2012, 16:20 UDF temperature profile #2 New Member   PB Join Date: Jan 2012 Location: UK Posts: 6 Rep Power: 7 Hi all, As I am modeling the flowpath in 3D I assume I need a 3D code so I wrote one. It doesnt seem to be working however and I am sure it is because I have not defined my variables correctly. I simply want the flow in the middle of the square inlet to be hotter than that of the outside so I am not even sure if I need the additional z variable. The middle of the rectangle lies at (0,0.365) I am getting divergence because of f when I try to run it in FLUENT. It is as follows: #include "udf.h" DEFINE_PROFILE(inlet_temp, t, i) { real x[ND_ND]; real y; real z; face_t f; begin_f_loop(f, t) { F_CENTROID(x,f,t); y = x[1]; z = x[2]; F_PROFILE(f, t, i) = 124.-0.365*0.365/(0.035*0.035)*124.; } end_f_loop(f, thread) } Thanks in advance, AeroGirl

 Tags gas turbine, inlet, temperature distribution, temperature gradient

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