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Accurate Numerical Flow Simulation of Hovering Rotors using different Transition Prediction Methods

Heister, C.C. and Raddatz, J. and Klein, A. (2010) Accurate Numerical Flow Simulation of Hovering Rotors using different Transition Prediction Methods. 36th ERF 2010, 06.-09.Sep., Paris.

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Abstract

In order to numerically determine the laminar-turbulent transition on hovering rotors, the applicability of three different prediction methods originating from fixed wing applications has been investigated. This includes the AHD method, used with approximated boundary layer data, and the Drela eN envelope method, using integral boundary layer parameters. Both methods are implemented in the structured flow solver FLOWer. Furthermore, a boundary layer / eN stability code coupled to the hybrid flow solver TAU was taken into account. One two-dimensional test case (Somers airfoil) and two three-dimensional hovering rotor test cases (ONERA 7A rotor and DLR Bo 105 flight test) serve to test and validate predicted transition and its influence on rotor performance.

Document Type:Conference or Workshop Item (Paper)
Title:Accurate Numerical Flow Simulation of Hovering Rotors using different Transition Prediction Methods
Authors:
AuthorsInstitution or Email of Authors
Heister, C.C.christoph.heister@dlr.de
Raddatz, J.jochen.raddatz@dlr.de
Klein, A.klein@iag.uni-stuttgart.de
Date:September 2010
Status:Published
Keywords:Transition, Rotor, Hover, Bo 105, 7A, AHD, eN Drela, eN, FLOWer, TAU
Event Title:36th ERF 2010
Event Location:Paris
Event Type:international Conference
Event Dates:06.-09.Sep.
Organizer:ONERA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignement
DLR - Research theme (Project):L -- no assignement
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Institute of Aerodynamics and Flow Technology > CASE
Institute of Aerodynamics and Flow Technology > Configuration Design
Deposited By: Christoph Heister
Deposited On:25 Oct 2010 14:12
Last Modified:12 Dec 2013 21:02

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