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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.

Item URL in elib:https://elib.dlr.de/79455/
Document Type:Conference or Workshop Item (Speech)
Title:Accurate Numerical Flow Simulation of Hovering Rotors using different Transition Prediction Methods
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heister, C. C.christoph.heister (at) dlr.deUNSPECIFIED
Raddatz, J.jochen.raddatz (at) dlr.deUNSPECIFIED
Klein, A.klein (at) iag.uni-stuttgart.deUNSPECIFIED
Date:September 2010
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
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:Aeronautics
HGF - Program Themes:Rotorcraft (old)
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft (old)
Location: Braunschweig , Göttingen , Köln-Porz
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Heister, Christoph
Deposited On:06 Dec 2012 15:59
Last Modified:30 Jun 2016 10:20

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