CFD Studies of Industrial Gas Turbine Exhaust Diffusers

CFD analysis of industrial gas turbine exhaust diffuser was carried out. Purposes of this study are improvement of the performance of exhaust diffuser in consideration of the distortion of the flow of the turbine exit, improvement of the diffuser performance in the big flow rate, and verification of CFD accuracy. To simulate the diffuser inlet distortion, CFD and experiment was carried out including last stator and rotor. Predicted turbine exit flow and diffuser pressure recovery is in reasonable good agreement with the measured data.