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Numerical investigation of blade-tip-vortex dynamics

Kaufmann, Kurt and Wolf, Christian and Merz, Christoph and Gardner, Anthony (2018) Numerical investigation of blade-tip-vortex dynamics. CEAS Aeronautical Journal, 9 (3), pp. 373-386. Springer. doi: 10.1007/s13272-018-0287-2. ISSN 1869-5582.

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Official URL: https://doi.org/10.1007/s13272-018-0287-2


Numerical computations on a finite wing are carried out using DLR's finite-volume solver TAU. The tip-vortex characteristics during static stall and deep dynamic stall are analyzed and compared to particle image velocimetry (PIV) measurements carried out in the side wind facility Goettingen. Computational fluid dynamics (CFD) and experiment are in good agreement, especially for sections close to the blade tip. Too large dissipation within the numerical computations leads to larger vortex size than in the experiment. The dissipation effect increases with larger distances from the wing. The analysis shows that the numerical method is able to capture the complex vortex tructures shed from the wing and helps understanding the source of these structures.

Item URL in elib:https://elib.dlr.de/119024/
Document Type:Article
Title:Numerical investigation of blade-tip-vortex dynamics
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Kaufmann, KurtUNSPECIFIEDhttps://orcid.org/0000-0003-2276-3386UNSPECIFIED
Wolf, ChristianUNSPECIFIEDhttps://orcid.org/0000-0002-9052-7548UNSPECIFIED
Gardner, AnthonyUNSPECIFIEDhttps://orcid.org/0000-0002-1176-3447UNSPECIFIED
Date:15 February 2018
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 373-386
Keywords:Helicopter blade, Numerical simulations , Blade-tip vortex, Dynamic stall
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: Kaufmann, Kurt
Deposited On:19 Mar 2018 09:01
Last Modified:21 Nov 2023 08:02

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