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Fehrs, Michael and van Rooij, Anna C.L.M. and Nitzsche, Jens (2014) FLUTTER PREDICTION IN THE TRANSONIC FLIGHT REGIME WITH THE γ-Re_θ TRANSITION MODEL. In: Proceedings of the the jointly organized WCCM XI, ECCM V, ECFD VI, pp. 6334-6346. International Center for Numerical Methods in Engineering. 6th. European Conference on Computational Fluid Dynamics (ECFD VI), 2014-07-20 - 2014-07-25, Barcelona, Spanien. ISBN 978-84-942844-7-2.
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Official URL: http://www.wccm-eccm-ecfd2014.org/frontal/default.asp
Abstract
This paper presents a utter analysis for the supercritical CAST 10-2 airfoil and the laminar NACA 64-008 airfoil in a flow with free boundary layer transition based on CFD computations. For transition prediction the γ-Re_θ transition model is used. The results are compared to fully turbulent results obtained with the SST k-ѡ model. Unsteady RANS computations at Re = 2e6� are used to determine the aerodynamic derivatives, required to identify the utter boundary for a 2 degree-of-freedom model. At the limits of the laminar drag bucket a decrease in utter stability can be found for both airfoils and the given structural model. However, the limits of the laminar bucket are strongly in uenced by the prescribed turbulence boundary conditions. In addition, an aerodynamic resonance and the possibility of a 1 degree-of-freedom flutter is found for the CAST 10-2 airfoil
| Item URL in elib: | https://elib.dlr.de/94555/ | ||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||
| Title: | FLUTTER PREDICTION IN THE TRANSONIC FLIGHT REGIME WITH THE γ-Re_θ TRANSITION MODEL | ||||||||||||||||
| Authors: |
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| Date: | July 2014 | ||||||||||||||||
| Journal or Publication Title: | Proceedings of the the jointly organized WCCM XI, ECCM V, ECFD VI | ||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||
| Open Access: | Yes | ||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||
| Page Range: | pp. 6334-6346 | ||||||||||||||||
| Editors: |
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| Publisher: | International Center for Numerical Methods in Engineering | ||||||||||||||||
| ISBN: | 978-84-942844-7-2 | ||||||||||||||||
| Status: | Published | ||||||||||||||||
| Keywords: | boundary layer transition, -Re � transition model, transonic flow, airfoil flutter, aerodynamic resonance | ||||||||||||||||
| Event Title: | 6th. European Conference on Computational Fluid Dynamics (ECFD VI) | ||||||||||||||||
| Event Location: | Barcelona, Spanien | ||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||
| Event Start Date: | 20 July 2014 | ||||||||||||||||
| Event End Date: | 25 July 2014 | ||||||||||||||||
| Organizer: | semni | ||||||||||||||||
| 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 - Simulation and Validation (old) | ||||||||||||||||
| Location: | Göttingen | ||||||||||||||||
| Institutes and Institutions: | Institute of Aeroelasticity > Aeroelastic Simulations | ||||||||||||||||
| Deposited By: | Fehrs, Michael | ||||||||||||||||
| Deposited On: | 13 Jan 2015 10:44 | ||||||||||||||||
| Last Modified: | 24 Apr 2024 20:00 |
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