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Implementation, verification and validation of empirical transition criteria for airfoil and rotary wing applications using the DLR FLOWer code.

Heister, Christoph (2010) Implementation, verification and validation of empirical transition criteria for airfoil and rotary wing applications using the DLR FLOWer code. Other. DLR-Interner Bericht. DLR-IB 124-2010/2, 96 S.

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Abstract

This report covers the implementation, verification and validation of a transition prediction method for airfoil and rotary wing applications based on the DLR-FLOWer code. The prediction method features five empirical criteria according to minimum pressure, laminar separation, Michel, van Driest & Blumer and Arnal, Habiballah & Delcourt (AHD). The criteria’s equations will be briefly summarized. The prediction method’s algorithm and it’s implementation into the DLR’s structured flow solver FLOWer will be described. Validation has been carried out for the Somer’s airfoil (M∞ = 0.3, α = [−5◦ , 15◦]) as well as the CAST10 airfoil (M∞ = 0.73, α = −0.25◦ ). A verification of the implemented method has been done using the ONERA 7A rotor hover test case. Finally, the method is applied to a recent rotor geometry in hover, representing an industrial application case.

Document Type:Monograph (DLR-Interner Bericht, Other)
Title:Implementation, verification and validation of empirical transition criteria for airfoil and rotary wing applications using the DLR FLOWer code.
Authors:
AuthorsInstitution or Email of Authors
Heister, Christophchristoph.heister@dlr.de
Date:February 2010
Number of Pages:96
ISSN:1614-7790
Status:Published
Keywords:transition, empirical, airfoil, rotor, Michel, AHD, FLOWer, Somers, 7A, CAST10
Institution:Deutsches Zentrum für Luft- und Raumfahrt
Department:Institut für Aerodynamik und Strömungstechnik
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Christoph Heister
Deposited On:06 Dec 2012 15:58
Last Modified:12 Dec 2013 21:54

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