In order to study comparatively the influences of turbulence models on heat transfer of the vane surface

five turbulence models and two wall functions were employed to calculate the surface heat transfer coefficients of NASA-MarkII guide vane and then compare with the calculated results.The results show that: the calculated results of different turbulence models differ a lot under the same boundary conditions.If different near-wall treatment functions are used

the calculated results may differ greatly even for the same turbulence model.Some turbulence model' s calculated results are only satisfactory in some area of the vane surface.However

no turbulence models are found to make the calculated results very close to the experimental data.In the absence of turbulence models with good universality

the calculation technique with different turbulence models and near-wall treatment functions for different domain is a feasible solution in simulating the heat transfer of vane surface.