In this paper the three dimensional round jet impinging on a circular pedestal is simulated. The predictions are carried out through numerical procedure based on finite volume method. The effects of the nozzle to target spacing (H/D=2, 4 and 6) and Reynolds numbers (23000 and 50000) are investigated. The flow field is considered to be incompressible and the buoyancy and radiation heat transfer effects are neglected. Turbulent fluctuations in the velocity field are modeled using the Reynolds Averaged Navier- Stokes (RANS) methodology and various turbulence models such as SST k  , RNG k  , Realizable k  and  2  f are also used. The results of convective heat transfer obtained on the pedestal and the flat plate, using  2  f turbulence model have good agreement with the experimental data compared to the other models and also heat transfer increases with increasing Reynolds number and the maximum heat transfer coefficients occur for H/d equals to six.

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