Effect of Near-wall Modeling on Aero-Thermal Characteristics of High Pressure Turbine Nozzle

Abstract

In order to investigate the effect of near-wall treatment on aero-thermal characteristics of the high pressure turbine, the numerical simulation was performed using the k-Ȧ based SST turbulence model with different near-wall treatment methods, that is, the wall-function method and the low Reynolds number method. The geometry and conditions for C3X vane were used for this study. The pressure distribution on the nozzle vane surface shows quite good agreements with the experimental results while the temperature distributions are over-estimated for both near-wall treatments.