Abstract
Prediction of aero-thermal loads on High Pressure Turbines (HPT) is critical for the design of gas turbine engines. The high Reynolds number of the flow impinging on the HP turbine, which contains high levels of turbulence and hot streaks makes aero-thermal predictions challenging. This study carries out Large Eddy Simulation (LES) of an uncooled, transonic, linear HP turbine cascade using a high-order numerical method. Heat transfer and aerodynamics of the blade is investigated in the presence of free-stream turbulence (FST). Quantitative comparisons with transonic, uncooled HP cascade experiments of Arts et al. 2 show satisfactory agreement. The distorsion of vortices from the inflow turbulence in the cascade passage and their eect on the blade boundary layer and heat transfer show interesting flow physics.
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