Recent Progress in Numerical Simulation of Highly Three-Dimensional Turbulent Flows and Endwall Heat Transfer in Turbine Blade Cascades

Accurate prediction of secondary flows and associated heat transfer phenomena in a cascade of turbine blades or vanes remains to be a challenging task, despite the great effort made in this area for several past decades. In a review of secondary flow literature, covering up to 2000, Langston [1] has stated also achievements and shortcomings of secondary flow CFD predictions at that moment. The present contribution objective is to reveal the progress achieved for the last decade. The main focus is on prediction of the horseshoe vortex system and endwall heat transfer.