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Evaluation of the Tip Vortex Flowfield at the Rotor Test Facility Göttingen

Stauber, Wolfgang (2018) Evaluation of the Tip Vortex Flowfield at the Rotor Test Facility Göttingen. Master's, Universität Göttingen.

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This thesis describes and evaluates experiments conducted on a rotor test facility with a focus on blade tip vortices. The flow field of a four-bladed rotor was studied with the particle image velocimetry (PIV) method to visualise the flow field. The experimental setup and procedure is described in detail as well as the computer based evaluation techniques. Interesting vortex interaction is discovered and interaction and vortex parametres are studied when varying parametres such as blade angle of incidence and axial inflow speed. A basic understanding of blade tip interaction for the test facility is gained and experimental data for future investigations is gathered. Vortex interaction is found to occur when axial inflow is sufficiently slow, suggesting the interaction to be caused as an effect of vortex separation. Studies of vortex merging and effects of Phase averaging PIV images are also discussed.

Item URL in elib:https://elib.dlr.de/120323/
Document Type:Thesis (Master's)
Title:Evaluation of the Tip Vortex Flowfield at the Rotor Test Facility Göttingen
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:May 2018
Refereed publication:Yes
Open Access:No
Number of Pages:71
Keywords:Vortex Pairing, Vortex Instability, Tip Vortex System, Particle Image Velocimetry (PIV), Rotor Test Facility Göttingen, RTG
Institution:Universität Göttingen
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:14 Jun 2018 14:37
Last Modified:14 Jun 2018 14:37

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