URANS Simulations of Active Flow Control on Highly Loaded Turbomachinery Blades

Active flow control is applied on highly loaded turbomachinery blades in order to delay separation, diminish secondary flow effects, and thus increase their efficiency. The impact is investigated separately in the context of two key configurations, i.e. a compressor cascade and an axial fan. Unsteady Reynolds-Averaged Navier-Stokes simulations are performed to determine beneficial flow control parameters. The results are backed up by autonomous experiments. The work concentrates on the numerical feasibility and the correct prediction of the flow control impact without claiming to present a complete analysis of the complex flow phenomena involved.

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