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Kaufmann, Kurt and Müller, Martin Michael and Gardner, Anthony (2020) Dynamic Stall Computations of Double-Swept Rotor Blades (Vollbeitrag). In: 21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics, 142, pp. 351-361. Springer Nature. 21. STAB/DGLR Symposium 2018, 6.-7. Nov. 2018, Darmstadt. doi: 10.1007/978-3-030-25253-3_34. ISBN 978-3-030-25252-6. ISSN 1612-2909.
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Official URL: https://doi.org/10.1007/978-3-030-25253-3_34
Abstract
A new design of a Mach-scaled double-swept rotor configuration is investigated by means of unsteady Reynolds-averaged Navier-Stokes computations using the DLR-TAU Code. The investigated rotor frequency of 23.6 Hz results in a Reynolds number of 350,000 and a Mach number of 0.21 at 75% radius. Two highly resolved dynamic stall cases with a sinusoidal pitching are considered and the results are compared to similar numerical computations using a parabolic blade-tip. The flow generated by the double-swept rotor configuration first stalls in the vicinity of the blade-tip, whereas for the parabolic blade-tip the stall process starts further inboard. In addition, the flow field of the double-swept rotor can be separated into two parts: outboard and inboard of the double-swept region. The lift inboard at r/R = 0.70 starts to stall at Theta_root = 32.9° and is delayed compared to the outboard region at r/R = 0.90, where lift stall occurs at Theta_root = 30.9°.
| Item URL in elib: | https://elib.dlr.de/120749/ | |||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | |||||||||||||||||||||
| Additional Information: | Print ISBN 978-3-030-25252-6 Online ISBN 978-3-030-25253-3 ISSN-electronic 1860-0824 | |||||||||||||||||||||
| Title: | Dynamic Stall Computations of Double-Swept Rotor Blades (Vollbeitrag) | |||||||||||||||||||||
| Authors: |
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| Date: | 2020 | |||||||||||||||||||||
| Journal or Publication Title: | 21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics | |||||||||||||||||||||
| Refereed publication: | Yes | |||||||||||||||||||||
| Open Access: | No | |||||||||||||||||||||
| Gold Open Access: | No | |||||||||||||||||||||
| In SCOPUS: | Yes | |||||||||||||||||||||
| In ISI Web of Science: | No | |||||||||||||||||||||
| Volume: | 142 | |||||||||||||||||||||
| DOI : | 10.1007/978-3-030-25253-3_34 | |||||||||||||||||||||
| Page Range: | pp. 351-361 | |||||||||||||||||||||
| Editors: |
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| Publisher: | Springer Nature | |||||||||||||||||||||
| Series Name: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | |||||||||||||||||||||
| ISSN: | 1612-2909 | |||||||||||||||||||||
| ISBN: | 978-3-030-25252-6 | |||||||||||||||||||||
| Status: | Published | |||||||||||||||||||||
| Keywords: | CFD, dynamic stall, helicopter aerodynamics | |||||||||||||||||||||
| Event Title: | 21. STAB/DGLR Symposium 2018 | |||||||||||||||||||||
| Event Location: | Darmstadt | |||||||||||||||||||||
| Event Type: | international Conference | |||||||||||||||||||||
| Event Dates: | 6.-7. Nov. 2018 | |||||||||||||||||||||
| Organizer: | STAB/DGLR | |||||||||||||||||||||
| 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 (old) | |||||||||||||||||||||
| Location: | Göttingen | |||||||||||||||||||||
| Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Helicopter, GO Institute of Aeroelasticity > Aeroelastic Experiments | |||||||||||||||||||||
| Deposited By: | Winkels, Elisabeth | |||||||||||||||||||||
| Deposited On: | 15 Nov 2018 11:59 | |||||||||||||||||||||
| Last Modified: | 18 Jun 2020 09:38 |
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