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Blade Tip-Vortices of a Four-Bladed Rotor with Axial Inflow

Goerttler, Andreas and Braukmann, Johannes N. and Wolf, C. Christian and Gardner, Anthony D. and Raffel, Markus (2019) Blade Tip-Vortices of a Four-Bladed Rotor with Axial Inflow. In: Proceedings of the 75th Annual Forum and Technology Display, pp. 1-13. VFS 75th Annual Forum & Technology Display, 2019-05-13 - 2019-05-16, Philadelphia, PA, USA.

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The vortex system of four rotating and pitching DSA-9A blades was examined numerically and experimentally. Numerical computations were performed using DLR's finite-volume solver TAU and were validated against experimental data gathered using particle image velocimetry (PIV) carried out at the rotor test facility in Gottingen (RTG). Algorithms deriving the vortex position, swirl velocity, circulation and core radius were implemented. Hover-like conditions with a fixed blade pitch were analyzed giving a good picture of the static vortex system. These results are used to understand the vortex development for the unsteady pitching conditions, which can be described as a superpositioning of static vortex states. The use of a zonal DES approach reduced numerical dissipation and improved physical modelling of the vortex development.

Item URL in elib:https://elib.dlr.de/122533/
Document Type:Conference or Workshop Item (Speech)
Title:Blade Tip-Vortices of a Four-Bladed Rotor with Axial Inflow
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Goerttler, AndreasUNSPECIFIEDhttps://orcid.org/0000-0002-8315-1298UNSPECIFIED
Braukmann, Johannes N.UNSPECIFIEDhttps://orcid.org/0000-0001-8046-9623UNSPECIFIED
Wolf, C. ChristianUNSPECIFIEDhttps://orcid.org/0000-0002-9052-7548UNSPECIFIED
Gardner, Anthony D.UNSPECIFIEDhttps://orcid.org/0000-0002-1176-3447UNSPECIFIED
Raffel, MarkusUNSPECIFIEDhttps://orcid.org/0000-0002-3340-9115133716054
Date:May 2019
Journal or Publication Title:Proceedings of the 75th Annual Forum and Technology Display
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-13
Series Name:Conference Proceedings digital
Keywords:Blade Tip Vortex, Helicopter, Rotor, CFD, Experiment
Event Title:VFS 75th Annual Forum & Technology Display
Event Location:Philadelphia, PA, USA
Event Type:international Conference
Event Start Date:13 May 2019
Event End Date:16 May 2019
Organizer:AHS - The Vertical Flight Society
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
Deposited By: Winkels, Elisabeth
Deposited On:12 Jun 2019 11:07
Last Modified:24 Apr 2024 20:26

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