Tell a friend
Print
Fehrs, Michael (2013) Influence of Transitional Flows at Transonic Mach Numbers on the Flutter Speed of a Laminar Airfoil. In: Proceedings "IFASD 2013". IFASD, 24.-26. Juni 2013, Bristol, Great Britain.
Full text not available from this repository.
Abstract
This paper presents a flutter analysis for a supercritical airfoil with free boundary layer transition based on CFD simulations with the gamma-Re_theta transition model. The results are compared to results obtained by fully turbulent simulations with the SST k-w model. Unsteady RANS simulations at Re = 2·10^6 are used to determine the aerodynamic derivatives, required to solve the flutter equation for a 2-dof model by a k-method. It is found that the flutter boundary decreases for a flow with free boundary layer transition compared to a fully turbulent flow in the transonic flight regime in the vicinity of the transonic dip, whereas the flutter boundary is raised in the subsonic region. Furthermore, an aerodynamic resonance in connection with an instability of the transition region is found.
| Item URL in elib: | https://elib.dlr.de/83749/ | ||||||
|---|---|---|---|---|---|---|---|
| Document Type: | Conference or Workshop Item (Speech) | ||||||
| Title: | Influence of Transitional Flows at Transonic Mach Numbers on the Flutter Speed of a Laminar Airfoil | ||||||
| Authors: |
| ||||||
| Date: | June 2013 | ||||||
| Journal or Publication Title: | Proceedings "IFASD 2013" | ||||||
| Refereed publication: | No | ||||||
| Open Access: | No | ||||||
| Gold Open Access: | No | ||||||
| In SCOPUS: | No | ||||||
| In ISI Web of Science: | No | ||||||
| Status: | Published | ||||||
| Keywords: | Transition, Flattern, Transsonische Machzahlen | ||||||
| Event Title: | IFASD | ||||||
| Event Location: | Bristol, Great Britain | ||||||
| Event Type: | international Conference | ||||||
| Event Dates: | 24.-26. Juni 2013 | ||||||
| Organizer: | Royal Aeronautical Society | ||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||
| HGF - Program: | other | ||||||
| HGF - Program Themes: | other | ||||||
| DLR - Research area: | Aeronautics | ||||||
| DLR - Program: | L - no assignment | ||||||
| DLR - Research theme (Project): | L - no assignment (old) | ||||||
| Location: | Göttingen | ||||||
| Institutes and Institutions: | Institute of Aeroelasticity > Aeroelastic Simulations | ||||||
| Deposited By: | Fehrs, Michael | ||||||
| Deposited On: | 05 Sep 2013 15:53 | ||||||
| Last Modified: | 08 May 2014 23:24 |
Repository Staff Only: item control page
