Fehrs, Michael and Nitzsche, Jens and Hebler, Anne (2017) CFD-Based Flutter Prediction for High Reynolds Number Flows with Free Boundary Layer Transition. In: IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics. IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics, 25.-28. Jun. 2017, Como, Italien. ISBN 978-88-97576-28-0
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Abstract
This paper introduces a local, correlation-based transition model used for CFD- based flutter predictions. The presented gamma transition model is based on the gamma transport equation of the gamma-Re_theta transition model. The model is calibrated for external aerodynamic flows in a low turbulence environment and is validated based on experimental data for moderate and high Reynolds numbers found in free flight. A steady 2D validation case, a steady 3D test case for comparison with the e^N method, an unsteady 2D validation test case, and an unsteady 2D test case for comparison with the e^N method are presented. In addition, the effect of a boundary layer transition on the flutter behavior of an airfoil in transonic flow at a free flight Reynolds number is demonstrated.
Item URL in elib: | https://elib.dlr.de/114751/ | ||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
Title: | CFD-Based Flutter Prediction for High Reynolds Number Flows with Free Boundary Layer Transition | ||||||||||||
Authors: |
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Date: | June 2017 | ||||||||||||
Journal or Publication Title: | IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | No | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
ISBN: | 978-88-97576-28-0 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | boundary layer transition, local correlation-based transition model, airfoil flutter | ||||||||||||
Event Title: | IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics | ||||||||||||
Event Location: | Como, Italien | ||||||||||||
Event Type: | international Conference | ||||||||||||
Event Dates: | 25.-28. Jun. 2017 | ||||||||||||
Organizer: | Politechnico Milano, Department of Aerospace Science and Technology | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
HGF - Program: | Aeronautics | ||||||||||||
HGF - Program Themes: | fixed-wing aircraft | ||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||
DLR - Program: | L AR - Aircraft Research | ||||||||||||
DLR - Research theme (Project): | L - VicToria | ||||||||||||
Location: | Göttingen | ||||||||||||
Institutes and Institutions: | Institute of Aeroelasticity > Aeroelastic Simulation Institute of Aeroelasticity > Aeroelastic Experiments | ||||||||||||
Deposited By: | Fehrs, Michael | ||||||||||||
Deposited On: | 27 Oct 2017 15:33 | ||||||||||||
Last Modified: | 20 Dec 2017 13:34 |
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