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Tip-Vortex Investigation on a Rotating and Pitching Rotor Blade

Goerttler, Andreas and Braukmann, Johannes N. and Schwermer, Till and Gardner, Anthony Donald and Raffel, Markus (2018) Tip-Vortex Investigation on a Rotating and Pitching Rotor Blade. Journal of Aircraft, 55 (5), pp. 1792-1804. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.C034693 ISSN 0021-8669

Full text not available from this repository.

Official URL: https://arc.aiaa.org/doi/10.2514/1.C034693

Abstract

The blade-tip vortex of a rotating and pitching DSA-9A blade was investigated numerically and experimentally. Numerical computations were performed using DLR, German Aerospace Center's finite volume solver TAU, and experimental data were gathered by using particle image velocimetry carried out in a stereoscopic setup at the rotor test facility in Göttingen. Algorithms deriving the vortex position, swirl velocity, circulation, and core radius were implemented. The agreement is better the lower the wake age is, with numerical dissipation enlarging the blade-tip vortex in an artificial manner with increasing wake age. Nevertheless, the numerical simulations are able to predict swirl velocity and circulation well and help understanding the growth and development of the blade-tip vortices. A comparison with a nonrotating version of this blade showed that the circulation of the nonrotating blade was in the same order.

Item URL in elib:https://elib.dlr.de/121669/
Document Type:Article
Title:Tip-Vortex Investigation on a Rotating and Pitching Rotor Blade
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Goerttler, Andreasandreas.goerttler (at) dlr.deUNSPECIFIED
Braukmann, Johannes N.Johannes.Braukmann (at) dlr.dehttps://orcid.org/0000-0001-8046-9623
Schwermer, TillUNSPECIFIEDhttps://orcid.org/0000-0002-6918-4480
Gardner, Anthony Donaldtony.gardner (at) dlr.deUNSPECIFIED
Raffel, Markusmarkus.raffel (at) dlr.dehttps://orcid.org/0000-0002-3340-9115
Date:2018
Journal or Publication Title:Journal of Aircraft
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:55
DOI :10.2514/1.C034693
Page Range:pp. 1792-1804
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0021-8669
Status:Published
Keywords:blade-tip vortex, rotating blade, pitching blade, CFD, helicopter blade
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
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, GO
Deposited By: Winkels, Elisabeth
Deposited On:17 Oct 2018 16:50
Last Modified:15 Nov 2018 11:06

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