Incompressible large eddy simulation and direct numerical simulation of a low-pressure turbine atRe = 5.18Ã?â??104 and 1.48Ã?â??105 with\ndiscrete incoming wakes are analyzed to identify the turbulent kinetic energy generation mechanism outside of the blade boundary\nlayer.The results highlight the growth of turbulent kinetic energy at the bow apex of the wake and correlate it to the stress-strain\ntensors relative orientation.The production rate is analytically split according to the principal axes, and then terms are computed\nby using the simulation results.The analysis of the turbulent kinetic energy is followed both along the discrete incoming wakes and\nin the stationary frame of reference. Both direct numerical and large eddy simulation concur in identifying the same production\nmechanism that is driven by both a growth of strain rate in the wake, first, followed by the growth of turbulent shear stress after.The\npeak of turbulent kinetic energy diffuses and can eventually reach the suction side boundary layer for the largest Reynolds number\ninvestigated here with higher incidence angle. As a consequence, the local turbulence intensity outside the boundary layer can grow\nsignificantly above the free-stream level with a potential impact on the suction side boundary layer transition mechanism.
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