The transition prediction capability of two different semi-empirical methods originating from fixed wing applications is studied for steady, rotary wing application. This includes the AHD criterion, used with approximated boundary-layer data, as well as the Drela eN envelope method, based on integral boundary-layer parameters. The methods have been implemented in the structured flow solver FLOWer of DLR. A two-dimensional test case (Somers airfoil) and a three-dimensional rotor test case at hover (DLR Bo 105 flight test) serve to validate the computed transition locations.
RANS-Based Laminar-Turbulent Transition Prediction for Airfoil and Rotary Wing Applications Using Semi-empirical Criteria
2013
8 Seiten
Aufsatz (Konferenz)
Englisch
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