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Publikationen am FG Aerodynamik

Experimental and numerical results of active flow control on a highly loaded stator cascade
Citation key Hecklau_11
Author Hecklau, M and Gmelin, C and Nitsche, W and Thiele, F and Huppertz, A and Swoboda, M
Pages 907-918
Year 2011
DOI 10.1177/0957650911410156
Journal Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy
Volume 225
Number 7
Abstract This article presents experimental and numerical results for a compressor cascade with active flow control. Steady and pulsed blowing has been used to control the secondary flow and separation characteristics of a highly loaded controlled diffusion airfoil. Investigations were performed at the design incidence for blowing ratios from approximately 0.7 to 3.0 (jet-to-inlet velocity) and a Reynolds number of 840 000 (based on axial chord and inlet velocity). Detailed flow field data were collected using a five-hole pressure probe, pressure taps on the blade surfaces, and time-resolved Particle Image Velocimetry. Unsteady Reynolds-averaged Navier–Stokes simulations were performed for a wide range of flow control parameters. The experimental and numerical results are used to understand the interaction between the jet and the passage flow. The benefit of the flow control on the cascade performance is weighted against the costs of the actuation by introducing an efficiency which takes the presence of the jets into account.
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